Code Lyoko

A student named Milly seeks the comfort of her teddy bear after being embarrassed and ostracized due to her young age by Sissi, the schools bully/diva. Milly believes that her teddy is the only one that she can turn to for comfort and support. A corrupted super computer known as X.A.N.A. enters the real world by possessing the bear. In a quest to strike and destroy his enemies, the X.A.N.A infected teddy bear increases to an enormous size. No one is safe as this monstrosity creates a path of destruction.

Ulrich and Jeremy are doing graffiti on a wall on campus while Kiwi wakes up Jim. When Jim passes Ulrich and Jeremy, Ulrich gets away, but Jeremy just stays there and gets Im trouble and has to stay in the campus over vacation. Sissy is being suspicious of Jeremy and thinks that he wanted to get in trouble. She asks her father to stay over the campus over her vacation, while she sorta spies on Jeremy. Jim is telling Jeremy to wash off the graffiti, then leaves while Jeremy gives Sissy the sponge and tells her (while mimicking Jim) to wash off the paint and later once again gets in trouble with Jeremy. Meanwhile, Xana has attacked again, this time spilling two toxic chemicals creating hazardous smoke. Sissy claims that she saw the smoke with arms and bumps into Jim who later finds the smoke after not believing in Jeremy and go into a small room where there is no vent and if they try to open the door, they can die. How will Yumi, Aelita, and Odd save the world and how will Ulrick find

The day starts off when two girls are talking about Ulrich and then Sissi goes and interrupts and tells the girls that Ulrich is hiding his affections for her. Later, Odd, and Ulrich pull a prank on Sissi, giving her a txt message about a ""true love"". While the prank is being set, people in the town are experiencing difficulties due to a strange virus, now 2 trains are going on a collision course and one of the trains has highly toxic chemicals which can kill the towns population. Yumi cannot contact Ulrich and Odd because they shut off their mobiles. The prank is being set and Sissi opens a shed which happens to be Kiwi (Odds dog)in there and jump om Sissy. Then Od gets in trouble after bringing Kiwi on the campus. Yumi finds the 2 and try to go to the factory, but Odd is stopped by Jim and is carried over to the principal. Now to help Aelida fix Xana, they will need everyone in the group, where is Odd when you need him?

This episode starts out as Yumi and Aelita are running inside Lyoko looking for the activated tower. Then Yumi suddenly disappears! She comes out of Lyoko exhausted, and looks just fine! Until Yumi Comes into Jeremys room and takes off Jeremys glasses and deeply gazes into his eyes and Odd and Urick come in the room and they are shocked. Then Jeremy realizes that Yumi is being controlled by Xana! Then Odd, Ulrich and supposedly Yumi.... get digitized. Yumi breaks out and trys to destroy the factory. Until they find the ""real"" Yumi in an orb and then they destroy the bad Yumi and the show ends.

When all the students cell phone goes off in class, it starts Sissy on a petition to save her cell phone--but its goes awry when Odd breaks into the schools offices locker to get his, Ulrich, u0026 Yumis cell phone. It turns out that X.A.N.A. is trying to get out board a highly powerful miltiary satellite in space. X.A.N.A.s target turns out be our heroes.

Jeremie learns that he has to take a test. If he passes, hell get transfered to a new school and nobody will be able to stop XANA. Speaking of which, XANA takes control of a pack of rats. The rats attack the school and makes it nearly impossible to move around. Ulrich, Yumi, and Odd get Jim, Sissi, and everyone else to the roof and then proceed to the lab. Ulrich and Odd are virtualized, while Yumi controls the supercomputer. Does the team stand a chance with Jeremie temporarily gone?

The episode starts with Jeremie still trying to materalize Aelita. He calls the team to the factory to show them his latest development: a strand of her hair that he has materalized into a test tube. Unfortunately, he didnt realize that he pressed one button too many, and thus screwed up Aelitas programming by adding in a whole lot of bugs. The result is that, immediately after she successfully enters the code (LYOKO) into a tower, she will be formatted - as in, deleted. And of course, as Jeremie is trying to literally work out the bugs, Xana attacks by putting out shockwaves to shake things up, putting Odd, the two junior journalists, and Kiwi in danger. But is Jeremie willing to allow Aelita to be deleted in order to save his friends?

After seeing laughing gas in Science class, Team Lyoko has to see it again - working for Xana. While working for Sissy in a school production of Romeo and Juliet, Ulrich and Yumi are overcome by the gas, and both Jeremie and Odd get a bit too much at the factory. Of course, this results in a data transfer error, leaving Odd bearly able to walk, much less fight off Xanas hordes of monsters. With Aelita flying solo and three of the team in critical condition, will the crew literally die laughing?

When learning about NanoDoctors, small robots being designed to cure dieases, Ulrich holds some gel that the NanoDoctors would live in. Od pranks him and pushes the gel into Ulrichs face, and some minutes later Ulrich suddenly faints and loses his memory. Strangely, amnesia spreads throughout the school, and Jeremy and Od think its Xana at work. Yumi and Od are virtualized while Ulrich escapes from Sissy, whos trying to convince him theyre in love. Ulrich gets virtualized and re-learns how to fight from Od. They help Aileta deactivate the tower. It ends up being the NanoDoctors gel habitat was infested by Xana Nano-Virii and got up Ulrichs nose.

Jeremie is now taking his ""Materalize Aelita!"" campaign to levels unknown - quite literally. He virtualizes himself, but there isnt enough memory in the system to complete the transfer, and Jeremie is caught between worlds. It will take more memory than the factory has to complete the transfer back to Earth, and if the crew doesnt hurry, Jeremie will be deleted as an old file! Could this be the final frontier for Jeremie? Will Yumi be able to pick up the slack?

Xana decided to get rid of everyone by using the power of Gravity, and Yumi, Odd, and Jeremy went to the factory, but Ulrich had a soccer game, and his Dad was there, and as Odd said: If youre not first, then youre not good in his book. Ulrich had to save Mrs. Hertz though, because she was in the science lab. So Yumi and Odd went to Lyoko, but a huge swarm of monsters reached them, and Yumi and Odd had to clear a path for Aelita, and Yumi created a rock shield with her Telekenesis, but Yumis Telekenisis didnt last very long, so Aelita decided to go across another way. She ended up getting hit and she fell off the bridge she was materializing. Odd and Yumi were in disbelief. But, Aelita appeared right behind them. Ulrich slammed through the science lab window, trying to save his dad, leaving Sissy with Mrs. Hertz.

Well, it starts off as Yumi wanting to have a party at her house. Of course, Odd jumps into action, and says that he has the Deejay problem all solved, they werent going to listen to Sissys music. But, oddly, Jeremy couldnt get a connection with Lyoko. Later, Odd and Ulrich are having sliding contests across the floor, but soon, a picture of the Deejay Odd was getting fell on the floor. Ulrich and Jeremy saw is and they asked who it was. Odd said it wasnt important, and he had some stuff to do. Later, again, Odd saw Samantha, the Deejay he was getting, and obviously, he happened to know her. They got into the Comp. Lab, and Sam wanted to take the most powerful laptop there. Jim went in and saw Odd holding the laptop. He scolded Odd, and he ended up getting out. But, they saw Xana attacking. They went to go and rescue Samantha, as she was still in the lab. Yumi and Jeremy went to the factory. Ulrich and Odd saved Samantha, but when Yumi got to Lyoko, she was materialized as soon as

As Jeremy is perfecting his materialization program for Aelita, Yumi, Ulrich and Odd are making preparations for her arrival. But as success comes within their grasps, Jims paranoia aggrivates the already bad situation started by XANA. Due to his injured ankle Jeremy has no choice but to reveal the existance of Lyoko to Jim so he can get to the warehouse. In the end XANAs attack is stopped and Aelita has finally been materialized into the real world. Or has she?

After discovering Aelitas link to the supercomputer and the inability to shut off the supercomputer that stems from it, Jeremie works hard to find new and better ways to fight Xana. To that end, he develops new vehicles for the group. He also develops a new tower-scanning program that instantly detects activated towers, allowing Aelita to live on Earth. While adjusting to her new life, the class takes a trip to the nearby woods for a scientific field trip. Ulrich wants to partner up with Yumi, but shes already partnered up with someone named William.

After discovering The Carthage Region, the group decides to explore it. Yumi is forced to opt out after her continued late-night trips to Lyoko draw the attention of her parents. While on The Carthage Region, Ulrich and Odd get dematerialized but dont appear in the real world, so Yumi sneaks out of the house to go to Lyoko and rescue Aelita from the Scyphozoa while Jeremie searches for a way to recover Odd and Ulrich. Unfortunately, Yumis parents discover that she is missing and alert the school, who in turn discover that the other four are missing as well.

When Aelitas dreams and hallucinations become too disruptive to ignore, the group heads to the Hermitage to discover their source. There, Aelita finds a doll she inexplicably recognizes to be Mister Pück. Hidden on this doll is a key to a train station locker, which contains the heavily encrypted diary of Franz Hopper. Upon its discovery, Xana takes action, possessing Jeremie, to ensure theyll never be able to read it. When they deactivate the tower and Jeremie comes to his senses, Yumi explains to Jeremie why Xana can possess him and not Ulrich, Aelita, Odd, or Yumi.

When the school holds a concert in the gym, William accidentally drops a mixing board for the DJ contest. Odd offers to fix it, and tries to get Jeremie to help. Jeremie is busy, so Aelita offers her help. She easily fixes the device, and finds that she is quite talented in using it. The school is holding its finals, as well, and Odd finds that he is not prepared in the least. Meanwhile, Xana possesses Jim and takes Aelita to the factory in order to deliver her to the Scyphozoa.

When Ulrich learns that Yumi might have to go back to Japan because her father lost his job, he cant accept losing her. After hearing the lottery numbers on the radio though, he gets an idea. Using a return trip, he is able to get a ticket with the winning numbers and give it to Mr. and Mrs. Ishiyama. When the others find out, they kick him out of the group until they can figure out what to do. To make matters worse, Xana activates a tower and possesses Nicolas. On top of that, he creates an army of Krabs to guard it.

When the supercomputers uranium power source begins to fail, Xana is forced to possess a local criminal named Peter Duncan to replace it. The supercomputers periodic shutdowns threaten not only Xana, but also Aelita, whose heart stops beating with each shutdown.

Ulrich and William get into a fight over Yumi. When Xana activates a tower and materializes Krabbes, he attacks Yumis house and destroys two scanners. While Ulrich is in detention, Yumi defends her family, and Odd distracts the Krabbe at the factory, Aelita has to make her way to the tower without any support.

After Xana possesses the principal of the school and kidnaps Odd and Yumi, he gives Jeremie an ultimatum: deliver Aelita to the Scyphozoa or sacrifice Odd and Yumi. However, Jeremie and Aelita go to Sissi for help and Sissi agrees to be tempoarily part of the group to help save her father and eradicate Xana.

Xana creates a ghost called a polymorphic specter, that can change its shape or form at will and doesnt need to possess a host, then uses it to drive a wedge between the group by having it kiss people while disguised as them. At the end of the episode Aelita kisses Jeremy to see how hell react. He (predictably) freezes up.

Jeremy is woken up to an alarm signal, with no activated towers, so he goes back to sleep. The next morning, while Jeremy and Aelita are investigating Jeremys computer, Odd looks for his DVD of his movie "I Guess Our Guest is a Ghost" to show the famous news reporter T.V. (Thomas Vincint), who is coming to the school to do a report on the lackluster of todays schools. Later, another tower is activated and Odd, Ulrich and Aelita are sent to Lyoko, only for the tower to deactivate itself. Then another tower activates and deactivates. Jeremy and Aelita stay at the factory while Odd, Ulrich, and Yumi go back to school. Finally, one more tower is activated and it starts to snow. Then it turns to a blizzard, trapping the three at the school. While they try to get to the factory, the find Sissi, Hervé, and T.V. in T.V.s car, crashed into a tree. As the tree timbers, Yumi pushes Ulrich out of the way and gets trapped in the process. Ulrich stays with Yumi and Odd goes to the factory. The tower is deactivated before Yumi and Ulrich freeze to death.

During the school physicals, Xana possesses the school nurse, Yolande, and has her kidnap Aelita. The rest of the group beats her to the factory, but has no way to get Aelita from the far more powerful nurse. Having no other choice, Jeremie decides to test out an experiment which will give a person the same powers as one possessed by Xana. To do this, he has to activate a tower like Xana. Jeremies towers turn green instead of red. Odd volunteers, and is enhanced by a ghost of Jeremies design. This allows Odd to fight the nurse effectively while the others deactivate the tower. This fortune doesnt last, however. Xana is able to take over Jeremies tower, reversing the effect of the ghost to drain Odds energy. And on Lyoko, Xana makes everything invisible. Now the group has to deactivate not only the original tower, but the tower thats draining Odds energy.

Jeremie discovers five activated towers and gathers the group to take care of them. However, when they arrive at the factory, they find a man at the interface, deactivating the towers as if it were a simple matter to do so. When questioned, the man claims that hes none other than Franz Hopper. However, something seems off about this convenient arrival. Franz says that the scanners cause cell degeneration, and blames it and the destruction of his diary on Jeremie. With everyone except Aelita angry at him, Jeremie calls his father and asks to be withdrawn from Kadic in favor of a school for gifted students – but after he hangs up, while pondering his dilemma, he realizes that there is something inherently wrong with Franzs explanation.

Its nearing the end of the year and Jeremies research has hit a dead end. After the group collects some data from The Carthage Region, he plans to use a tower to decipher Franz Hoppers diary. Before the mission, Odd gets a message from a mystery girl. When he goes to meet her, he is attacked by one of Xanas ghosts and locked inside a well at the Hermitage. The ghost then assumes Odds form and goes to Lyoko in his place. The tower that Xana activated to make the ghost then deactivates, confusing Jeremie. Putting it out of his mind, he begins his plan to decipher the diary. Shortly after they begin, the ghost turns on the group, devirtualizing Yumi and chasing Ulrich away from the tower as three Tarantulas arrive to protect it. At the same time, Xana attempts to take over Jeremies tower, locking the decoding procedure so they cant abandon it. Jeremie realizes the true nature of the ghost during the fight, and Yumi goes off to find the real Odd. After the ghost proves to be ineffective against Ulrich, it shape-shifts into a clone of Ulrich. In this form, it proves to be an equal match for him. After much fighting, Ulrich finally beats the clone, but is taken out by a Tarantula shortly after. Just when it looks like Jeremies tower will fall, Franz Hopper steps in and protects it. The diary then decodes fully. After examining the diary, Jeremie tells Aelita that she is Franz Hoppers daughter.

After another three-week vacation, the group is still looking for a way to fight X.A.N.A.. X.A.N.A., meanwhile, is trying to destroy Lyoko, preventing them from doing just that. He does so by targeting the core, which contains the code that maintains the virtual world. In a side story, Odd blackmails Jim into asking Principal Delmas to make Odd have the same classes as his friends. Additionally, Yumi decides against having a relationship with Ulrich and decides it would be better if they were just friends. While defending the core, Aelita is suddenly devirtualized by the enemy. However, she still ends up back in the scanners and Jeremy realizes that this is because Aelita is fully human, just like the rest of the group, so she does not need Code: Earth anymore to be materialized on Earth.

Xana attacks the Lyoko warriors by possessing a large amount of food. At the same time, he bugs up The Mountain Sector by rising the digital sea, but Odd and Aelita go to Sector 5 to stop him. Xana also mounts an attack on Lyokos core at the same time.

Aelita gets mad at Jeremie and she and Odd go into Lyoko without telling anybody, which causes problems. On lyoko, Xana creates a diversion to get everybody to deactivate the tower in The Mountain Sector while the monsters (mostly Mantas and Creepers) worked on destroying the core of Lyoko. Jeremie and Aelita find a strand of DNA that belongs to Franz Hopper, indicating he may be still alive.

After being rejected by Yumi, William makes it his mission to find out the secret shes hiding. Soon enough, he manages to follow Ulrich and Odd to the factory and learns about Lyoko and Xana. Meanwhile in The Ice Sector, the Scyphozoa possesses Aelita to enter Code:Xana in the way tower, but is devirtualized just in time. The group thinks Williams help is going to be quite useful, when a possessed demolition worker sets several bombs in the factory. They take a vote as to whether or not to include William as part of their group, but Yumi votes no and Jeremie initiates a return to the past.

When Xana sabotages the supercomputer, weird bugs begin cropping up in Lyoko. With its power rapidly draining, Jeremie needs to repair it before it becomes completely useless. However, he seems to forget about boys dorm inspection, so Jim forces him to stay behind. Meanwhile, Xana possesses vines to trip up the rest of the group, except Aelita. Since the attack keeps draining power from the supercomputer, Aelita purposefully wipes out The Ice Sector leaving The Mountain Sector left.

When Odd complains that he doesnt have any cool powers on Lyoko like his friends, Jeremie designs him a teleportation power. It works, but ends up leaving duplicates of himself in the location he teleported from in The Mountain Sector. After trying it twice, Jeremie devirtualizes Odd to find out what went wrong, accidentally creating three clones. Meanwhile, in the real world, Xana attacks using a mysterious smoke that turns anyone it hits to stone. One of Odds copies gets turned to stone, so the other two Odds must retrieve him before they become unstable and disappear.

After William is initiated into the group, a series of events leaves only him and Aelita to defend Lyokos core. During Williams first mission to Lyoko, Xana uses the Scyphozoa to possess him, making him the general of a massive army focused on Lyokos core. Despite their best efforts, the group cant stop the possessed William from destroying the core, which both renders the supercomputer useless and transforms William into a darker, Xana-themed version of himself. Later, in the Hermitage, while the group broods over their predicament, Jeremie receives a coded message directly from the internet, sent by none other than Franz Hopper who somehow survived the destruction of Lyoko.

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In order to compensate for all of William, while under XANAs control, Jeremie sets to work designing new equipment for his friends and recreating Lyoko. In order to buy himself time to do this, he activates a tower and uses it to create a a clone of his own to attend class in his place. Meanwhile, Williams absence is drawing attention, from both the principal and his father. While Jeremies Clone is impressing Jim outside, William appears on Lyoko and tries to put the tower under XANAs control. In order to maintain his clone, Jeremie draws energy from Sector Five to maintain the activated tower. He eventually runs out of energy and the tower is put under XANAs control. While Odd holds the Jeremie Clone off, Aelita, Yumi, and Ulrich go to Lyoko with new outfits and powers. They eventually deactivate the tower and stop William, who tries to push Yumi into the digital sea. She is saved by Odd at the last second. Jeremie then does a return to the past and replaces the Jeremie Clone with a William Clone to prevent any suspicion about his absence.

There is a new recreation room at Kadic and Williams clone is put in charge of it. Meanwhile, Jeremy has developed a program to get the real William out of Lyoko. However, the program malfunctions and bugs up the tower, allowing X.A.N.A. to take it over while Aelita cannot shut it down. As the William clone lashes out at the group, the real William is on Lyoko to keep the tower under X.A.N.A.s control. Jeremy manages to repair the tower in time for Aelita to reset it, restoring the clone to working order. With a return trip to the past to erase the unwanted memories of Williams behavior at school, the group elects Sissi as the rec room monitor.

The gang manages to convince Jeremy to let them test out the Skid. During this test, the navigation system bugs up, leaving the gang stranded in the digital sea. Jeremy runs to his room to fetch the backup programs, but forgets that its Fire Safety Day and runs into several teachers, eventually having to scale the roof to get to his room. Meanwhile, the Skid stumbles upon another Lyoko and is attacked by two eel-like monsters. Jeremy is able to repair the navigation system and bring his friends home, after which he surmises that the replica of Lyoko is created from the portion of the Keys to Lyoko that X.A.N.A. has stolen from Aelitas subconscious in the second season finale, The Key. Jeremy wonders how he plans to use it.

The group travels to one of X.A.N.A.s replica sectors in the Digital Sea. Meanwhile, Aelita and Odd get into a fight after Odds desire to sleep in gets them both in trouble. Furthermore, their arguing inadvertently leads Nicolas and Herve into the factory, where Jeremy is forced to distract them while the group explores the Lyoko copy, which consists entirely of the Forest Sector. On the Lyoko replica, William and a pair of Megatanks arrive to destroy the Skid, the destruction of which would cut the group off from the Supercomputer. Odd and Aelita refuse to work together when they first arrive, but eventually resolve their differences and take William down. Jeremy surmises that another supercomputer is controlling the Replika (what the Lyoko copies were dubbed as), and in order to get rid of it, hell have to find a way to materialize his friends at the location of the supercomputer.

When a comet passes near Earth, X.A.N.A. uses a laser-equipped military satellite to split it into chunks, simultaneously aiming the bulk of it directly at the factory. Aelita, Odd, and Ulrich are exploring the digital sea at the time, and X.A.N.A. traps them with a firewall to prevent them from stopping the attack. Meanwhile, Yumi is stuck at school and, when informed of the attack, works to evacuate the school. Jeremy tells Yumi to connect his laptop to an antenna to tap into the military satellite and destroy the comet. She does so with help from Hiroki and Johnny. However, X.A.N.A. prevents them from doing so. Unable to stop the attack, Aelita reasons that X.A.N.A. is more concerned with taking her prisoner than destroying the Supercomputer, and to test her theory, she has Odd devirtualize her. Having guessed correctly, she watches as X.A.N.A. destroys the comet and calls off his own attack on his own accord.

Hiroki steals Yumis diary and Ulrich finds it. Meanwhile, in a new attempt to free William from X.A.N.A.s evil clutches, Jeremy creates a program to find William in the Digital Sea. When he uploads the program to the Skid, the sonar becomes bugged, forcing the gang to return to Lyoko. When the Kongers interrupt their return, Yumi gets stranded, and is lost in the Digital Sea. X.A.N.A.s attempt to take advantage of this alerts Jeremy, allowing him to direct his friends to Yumi. After fighting off the Kongers and William, who has his own ship (the Rorkal) to travel in, they return to Earth. To help Hiroki apologize to his older sister, Ulrich secretly returns the diary.

Having failed to destroy X.A.N.A.s supercomputer in the Amazon, the group sets out to finish the job. Meanwhile, Odds bragging gets the better of him, and he makes a bet with Ulrich not to brag for 24 hours. However, circumstances conspire to constantly put him in the spotlight, and when he ultimately both defeats William single-handedly and destroys the supercomputer in the real world, Odd becomes convinced that being a braggart is something he can be proud of.

Jeremy has developed a program to make the William clone smarter, but the learning curve is still problematic, as it tries to fling a glass into the air from a fork. Milly and Tamiya, overhearing the groups conversation about the clone, decide to ask him personally. The clone, having never been told to keep the information a secret, reveals everything to them, and even takes them to the factory. Meanwhile, Jeremy plans a mission to the next Replika, a copy of the Desert Sector. During the trip, William emerges from a scanner and tries to destroy the supercomputer. With the help of Milly, Tamiya, and the William clone, he is defeated, and a return trip keeps Milly and Tamiya in the dark about the Supercomputer.

When Odd breaks a mirror, a little bad luck follows and jinxes him everywhere, even on Lyoko. A bug in his virtual avatar spreads to Yumi and Aelita, causing annoying pauses and random devirtualization in the Desert Replika. Meanwhile, at the site of the Replikas supercomputer, X.A.N.A. materializes Kankrelats in the real world to stop Ulrich and Yumi. Despite the bug, their mission to destroy X.A.N.A.s next Replika ends in success, this time by Ulrich, and Odds luck returns soon afterwards.

When Sissis pen pal from Iceland, Brynja Heringsdötir, arrives at the school, all the boys swoon over her, making Sissi envious. When Brynja takes an interest in Odd, he ends up showing her the Supercomputer. While there, she messes with the computer despite Odds pleas not to, creating a glitch in a program Jeremy is installing that causes every virtualization to happen in the wrong sector and prevents materialization. This becomes all the more problematic when William catches Aelita alone on Lyoko. When forced to choose between his friends and his new love interest, Odd initially stays with her, but decides that his friends are more important. After rescuing Aelita from William, they make up. As Brynja has not been told anything about the purpose of the Supercomputer, nor does it appear that she even cared in the first place, they have no need to perform a return trip to the past before she leaves.

Because of a surprise dorm inspection, Odd has to convince Yumi to keep Kiwi at her house. Jeremie, meanwhile, has located the next Replika, a copy of Sector Five. Its supercomputer is located on a newly-built space station orbiting Earth. While Odd and Yumi work to disable it, Aelita and Ulrich work to disable the Replikas defenses of Sector Five, which threaten to destroy the Skid. To make matters worse, the supercomputer is guarded by a trio of floating spheres that can grow spikes and melt through metal. In the end, Odd disables the supercomputer by breaking some cooling pipes in the room and damaging it with water. All the while, Yumis dad, Takeo, has been having fun with Kiwi, much to Odd and Yumis surprise.

Aelitas first concert with the Subdigitals is coming up, but Aelitas stage fright threatens to get the better of her. Odd meanwhile, has to find an extra ticket so he can bring a date. When the concert finally starts, XANA attacks, possessing Sophia, in order to kidnap Aelita. He also possesses Milly and Tamiya for some extra help. While Ulrich battles the two reporters, the others work to shut down the tower, all while the Subdigitals music plays in the background. Once the threat is over, Jeremie activates a return to the past so Aelita wont miss the concert.

Odd is presenting one of his films, but is unhappy because his parents are coming. According to him, they never find fault in anything he does, which he finds dissatisfying because he isnt treated like a normal teen. However, when hes finally pressured into it, XANA attacks, using the schools cell phone antenna to spread a virus to everyone who answers their phone to cause them to become vicious, angry mind controlled slaves , starting with Odds parents. With the widespread use of cell phones, all but the Lyoko warriors and Sissi are affected, Sissi having had her phone accidentally broken by her father. While she and Odd attempt to evade the possessed students and faculty, the others deactivate the tower in the Mountain Sector. Once a return trip wipes everyones memories, Odd plays his video, which showcases all the humorous moments at Kadic, with Sissi in particular being treated in a positive light as thanks for her earlier assistance, much to her confusion.

In order to defeat XANA, whom they have vastly underestimated, Jeremie plans to design another multi-agent system to combat him. That, however, is still under development. In more immediate matters, Jeremie has figured out how to free William from XANA, but needs to run his program directly from the Ice Replika supercomputer. Meanwhile, Williams parents arrive to visit their son, and the strange behavior of his clone concerns them greatly. Back at the Replika, William and two Mantas come to try to sever the translation. However, the Mantas are quickly destroyed by Yumi and Ulrich. William then jumps into the digital void and comes back up with the Kolossus. Jeremie uses some new tricks to stop the Kolossus, allowing Aelita and Odd to reach the supercomputer without worry. However, an army of robotic drones now stationed at the facility complicates matters and they de-translated Odd. With much effort, Aelita is able to run the program to free William before she is de-translated also, but their victory comes at a cost: though William is saved, the Skid is destroyed by the Kolossus with Aelita in it. Fournately, she is devirtualized before the Skidbladnir was totally destroyed. Back on Earth, William is able to take his clones place, pacifying his concerned parents. Ulrich, meanwhile, has to deal with Williams affection for Yumi once more.

With their mission completed, the group looks back on all their fond memories of Lyoko. Sissi, meanwhile, plants a tracking device on Ulrich in order to discover their secret. When it comes time to shut down the supercomputer, all but Yumi are unwilling to go through with it: Aelita is still holding onto the hope that her father can somehow be saved, Jeremie doesnt want to take away the thing which made them friends, and Odd and Ulrich both liked being heroes. While they muse over their attachments to Lyoko, Sissi finds her way into the computer lab, and Jeremies open diary reveals the whole of their adventures. When Sissi tries to explain this to her father, he believes she has lost it and sends her to the infirmary. A return to the past deals with that problem. Ulrich stops Sissi from planting the tracker on the repeat attempt, and the quintet invites her as a friend. Once more at the supercomputer, the group unanimously decides to shut it down, closing the book on their adventures, for now.