In this adult school role-play, Kana and her husband Shingo teach at the same school and live a peaceful life until delinquent adult student Kimura, protected by an influential parent, begins bullying classmates and running wild. While Shingo looks away, the strong-willed Kana confronts him with discipline bordering on corporal punishment. Kimura retaliates by conspiring with other adult students to stage compromising photos of her, then uses the evidence to blackmail her into obeying his every demand, ultimately stealing her from her husband.