Trapped in a marriage plagued by boredom, the wife begins a secret affair with her husband's colleague at love hotels. Although she was aware of her husband's infidelity, she eventually overcomes her resentment and repeatedly meets with her subordinate behind his back. Gradually, she becomes emotionally and physically captivated by her younger lover's strong physique, even allowing him to creampie her. As her seduction deepens, her relationship with her husband completely unravels.