Kasumi, a married teacher in charge of the advanced class, is warned by the vice-principal not to favor any specific student. However, to help a struggling and bullied student, she invites him home to tutor him. Later, jealous students find out and gang-rape her in the gym storage room. After the incident, Kasumi decides to press charges against the students, but the students' parents storm into her house and this time humiliate her body and mind…
