Satomi, a young wife with a strong libido and a masochistic tendency, is not satisfied with her herbivore husband and is in an affair with her husband's boss, devouring their carnal desires. However, she is in the middle of being tied up and made to climax by her perverted father-in-law who lives with her. Jealous of their affair, her father-in-law escalates his training even further. Satomi, who has become a fine sex slave, is made to satisfy the sexual needs of three men at the same time, and climaxes with pleasure and agony!!