Middle school girl Haruka Nozaki (Anna Yamada) had to transfer from a school in Tokyo to a town school that was about to close due to her father's work. As an outsider, she was bullied as soon as she entered the school. In order not to cause trouble to her family and sister, Haruka decided to endure the bullying until graduation. However, due to the escalation of bullying, her parents died in a fire and her sister was severely burned. For this reason, Haruka began her revenge.