Aki is unsatisfied with her sex life with her husband, and before she knows it, she becomes entangled in the sexual domination of her stepson, Yoshio. His commands grow increasingly intense, and she begins a life where she is touched and aroused late at night while her husband sleeps beside her, forced to sexually serve his friends. Even as Aki tries to resist these wrongdoings, her body is overwhelmed by Yoshio's control and the desires of young men. Her body is no longer her own—she can no longer move freely, compelled only to obey Yoshio's every order.