Sherry, a high school girl, visits her masochistic boyfriend's room after school and enjoys playing with him. As a result, she keeps coming home late. Her father, concerned by her repeated tardiness, begins to follow her and accidentally witnesses her intimate session with her boyfriend. He discovers that his daughter is a sadist. While pretending not to know about her sexual tendencies, he becomes increasingly aware of her behavior. Sherry realizes her father knows her true nature and gradually starts teasing and tormenting him. Meanwhile, the father, aroused by his daughter's dominant and sadistic side, slowly acknowledges his own masochistic desires and descends into becoming her obedient servant.