Yuka followed her former teacher and now husband into education, and their work and marriage had been going perfectly. Then her husband caught delinquent adult student Shinji bullying someone and punched him during the confrontation. Enraged by the teacher’s claim that it was discipline, Shinji turns his revenge on Yuka. He later summons her to an empty classroom and orders her to pay with her body if she does not want her husband fired. Desperate to protect him, Yuka gives herself to Shinji, placing her marriage in the hands of the vengeful student.