A housewife, Umi (Shiokawa Undan), lives an ordinary life with her husband. However, she is not satisfied with their sex life and repeatedly masturbates using ropes. One day, her husband brings home a new employee who started after retiring from his previous job. This older man accidentally sees her masturbating and ends up assaulting and raping her. But Umi is not entirely displeased and begins to beg him to keep attacking her in the future…
