H2O: Just Add Water

Three very different teenage girls, Emma, Cleo and Rikki, facing everyday teenage problems. With a twist: theyre mermaids; after discovering a magic place where they are given incredible powers over water that change their lives forever.

Rikki, Emma and Cleo discover that sea turtles are being captured by fishing nets. When Rikki and Emma attempt to rescue the turtles by cutting the nets, it causes the fisherman to think that there is a rogue shark roaming their ocean.

Cleos sister Kim finds her diary and thinks that Cleo and her friends are evil mermaids and she plans to tell everyone. Meanwhile, Lewis goes to Mako Island to find out more about what happened to the girls.

Miss Chatham gives Cleo a warning that she doesnt quite understand. Until Emma finds herself in a trance and unable to change back from a mermaid under a full moon.

Rikki is offered a job to collect rare fish. At first it seems perfectly fine, until she finds out the person that hired her is selling the fish for large profits.

Byron asks Emma for help with training the schools swimming team and Emma has some trouble deciding whether or not to help out in her current situation. Meanwhile, Lewis continues to experiment on the girls, which annoys Rikki.

Emma invites Miss Chathams to stay at her place and Zane overhears Miss Chathams concerning about her treasure.

Emma is doing well at her new job at the JuiceNet cafe, but when she is left in charge, she has trouble managing her new employee, Rikki.

The girls have to fake sick as a result of a thunderstorm, so their secret wont be discovered at school. But their sickness attracts the attention of doctors.

Cleo and Kim are stuck with their cousin Angela who wants to go body boarding and causes a bird brained distraction when Cleo refuses.

Emma decides to change her look by colouring her hair red. Though nothing is that simple when youre half-mermaid. Zane asks Rikki out on a date.

Rikki finds a locket that looks the same as Miss Chathams in a Jewellery shop and she is determined to get it.

Its time for Emmas familys annual vacation trip, but she cant go as the risks are too high. But all her excuses dont go very well with her family. Meanwhile, with the return of Dr. Denman, Zane is closer than ever to cracking the girls secret.

With Cleos parents now divorced, Cleo is ordered by her dad to take more care of Kim, starting with taking her to a concert. But on the night, Cleo, Rikki and Emma all accidentally see the full moon, and take off to Mako Island, with Lewis in hot pursuit. Once there, the girls undergo another magical transformation in the Moon Pool, as a rare planetary alignment intensifies the power of the full moon – Emmas power is enhanced so that she can produce snow and frost, Rikki can conjure lightning, and Cleo can now control wind as well as water. After the moonstruck girls nearly harm Lewis, they realise that they must work to control their new powers, before anyone else gets hurt.

Rikki tries to avoid Zane when he comes back, but needs his help after an incident with a speedboat. Meanwhile, Charlotte continues to flirt with Lewis and Cleo worries for their secret.

Trouble is in the air as the Setoris start to suffer and the JuiceNet is endangered by a new bar. But when Lewis finds a book of mermaid spells, the girls attempt to use a potion to fix everything. However, things arent so easy when you have special powers.

Everyone is shocked when Cleo is fired at the Ice Cream Stand, and even more so when Lewis takes her place! Rikki and Emma strike back at him but end up going too far

Emma has to take Eliot for horse riding lessons and the competitive perfectionist tries to be better than the instructor. Meanwhile, Lewis double dates with Charlotte and Cleo.

In need of cash, Rikki decides to go and searching for a lost statue with a huge reward. But she lies to Emma and Cleo, which causes danger when Rikki is knocked out!

On the night of a full moon, Lewis, Emma, Rikki and Charlotte accompany Cleos family for a camping trip at Mako. When all three girls are affected by the moon, they are unable to stop the curious Charlotte...

Zane learns of the myth of Ambergris, a fragrance that can make mermaids fall for any man that wears it. When he buys it, Nate ends up wearing it and Emma, Cleo and Rikki all fall for him!

Its full moon and the girls insist that they dont need Lewis to assit his help as all three girls are staying at Emmas and Ash is coming over. When Cleo and Rikki fall under the moon spell, can Lewis stop them from revealing their secret to Ash?

Lewis is trying to find more information on the moon pool and stumbles across research on it by Max Hamilton from fifty years ago. Will Lewis reveal the girls secret to him in order to complete the puzzle?

Charlottes stubborn nature and thirst for knowledge leads her to Max, who confirms her suspicions and leads her to the Moon Pool. Lewis meanwhile is having trouble trying to keep their relationship together.

Charlotte is determined to prove her love for Lewis and show she is better than the other three, and refuses their advice and takes matters into er own hands when Nate causes trouble for Lewis.

Angry over the short friendship with the girls, Charlotte forces Lewis to choose between her and his friends. This results in Cleo to feel isolated and she runs away and gets lost. When he is informed, Lewis must make up his mind: Cleo or Charlotte?

Cleo and Rikki enter their final year of high school. They make friends with a new girl, Bella, and a new boy, Will. However, they encounter a new force on Mako Island that has the power to turn water against the girls.

At the marine park, Cleo seeks a job as a dolphin trainer. Meanwhile, until she and Bella reach an understanding, Rikki fires Nates band, preventing them from playing in the cafe.

To get more interest in the cafe, Zane develops a dirt bike race. However, Rikki finds out that it is a scam. She and Bella decide to team up to teach him a lesson. Meanwhile, Lewis and Cleo find out something interesting about mixing the waters in the Moon Pool

Cleos family and Sam go on a picnic to the beach, which leads to tension when Cleo refuses to go near the water. Kim abuses the fact that her father is happy in order to get lots of gifts. Wills sister Sophie competes with Bella to get the job Bella wanted at Rikkis Cafe.

Cleo starts to experiment on the moon pool water without Lewis knowledge, but things start going wrong when Cleos fish Hector gets trapped in the bubble of floating water. Meanwhile, Lewis has to play golf with Cleos father.

Bella helps Will with his free-diving training but when she realises hes more interested in her as a mermaid than a girl, shes hurt. Rikki and Cleo have to improvise when the cafes first corporate function is actually a children‟s party.

Kim attempts to derail Don and Samanthas wedding. Lewis receives an opportunity to study in America. Cleo realises shes got to let Lewis live his own life and let him go overseas.

Sophie uses Bellas idea for a fundraising concert and presents it as her own to Rikki to gain publicity for the cafe. Cleos caught in the crossfire with Kim when Samantha moves in and puts her stamp on the Sertori home.

Cleos introduced to Ryan, a young geophysicist whos working for Samantha. Rikki doesnt react well to Cleo consulting Ryan about the Mako rock and a fracture begins to appear in the trio.

Will competes in the Free-Diving Championships but afterward chooses to break from the sport and shrug off Sophies influence on his life. Rikki sees Sophie kissing Zane at the event and breaks off their relationship.

The girls discover the Mako crystals contain immense energy and need to mount a rescue mission when Zane jealously steals one in an effort to gain Rikki‟s attention.

Bellas eager to ask Will to the end of year party until she sees him asking Rikki. A big misunderstanding occurs which prompts Will to express his true feelings for Bella. Sophie tries to get Zane to change the name of the cafe.

Cleo discovers a comet is causing fish to flee the waters around Mako Island. The girls find a way to restart the message in the Moon Pool and discover the comet will collide with earth. Sophie meets Ryan and with Zanes help they join forces to remove the crystals from the Moon Pool.