Hideko is a woman who loves pleasure, feeling her life has been dependent on her husband. Her son is fed up with his father, unable to keep a job for long, and his relationship with his father continues to deteriorate. Amidst this tension, the son begins to feel drawn to his mother, eventually catching her touching herself intimately. From that moment, his thoughts turn obsessively toward her, consumed by an overwhelming urge to rape her. However, the kind-hearted Hideko takes the lead, attempting to calm and control her son's impulses. As their forbidden acts repeat, their relationship deepens, transforming their bond into something new and taboo.