Manager Aoki hosts a drinking party at his house to thank his subordinate Kashiwagi. Kashiwagi is captivated by the sexy figure of the manager's wife, Rei, and, fueled by alcohol, attacks Rei as the manager sleeps drunk next to him. When the manager wakes up, Kashiwagi panics and runs away, but he cannot forget what happened that night, and later visits Aoki's house again and pushes Rei down. Rei resists, but her daily frustrations mean she begins to feel aroused in Kashiwagi's arms...