The tragic story of female teacher Yukari, ensnared in a gang of juvenile delinquents' conspiracy. When she tries to help a bullied student, she falls into the villains' trap—her home invaded, she is restrained and assaulted. The entire incident is recorded on video and used to blackmail her. Forced into becoming their sex slave, she is dominated through secret encounters during class and coerced sex after school. The boys' uncontrollable desires escalate, eventually entangling her with the very student she tried to protect.