Female teacher Ai worries about her student Yoshikawa, who has been refusing to attend school, and visits his home. Responding to his screams, Ai exposes her naked body. Her figure catches the eyes of malicious delinquents, who threaten her and gradually take control, stripping her of her will. During class, after school, and even at the house where she lives with her fiancé, she is repeatedly invaded and assaulted. Ai sinks deeper and deeper into degradation, ultimately descending into madness.