Hiroki Terai is a prosecutor at the Yokohama Public Prosecutors Office. He is married and and has a elementary school aged son, who is often truant. Hiroki worries his son might shut himself off from the outside world. Meanwhile, Natsuki Kiryu is a contract worker at a Hiroshima shopping mall. She has a peculiar habit and keeps it a secret. Her secret is that she wants to disconnect from the outside world. Due to the accidental death of a person, Hiroki and Natsuki become connected with each other.