Umi (Shiokawa Uni) is a housewife who lives an ordinary life with her husband. However, she was not satisfied with her sex life with her husband and repeatedly masturbated with her husband's rope. One day, her husband brought a new man to her house who had just changed jobs. The older man, who had joined her after retiring from her previous job, happened to witness her masturbating. He approaches her and rapes her. However, Umi was not yet satisfied with her life, and she began to beg him to continue attacking her...
