Satomi, whose sex life dried up after moving in with her father-in-law, starts an affair with her boss at her part-time job to satisfy her desires. However, her affair is discovered by her father-in-law, who becomes enraged and demands her body. Despite her resistance, Satomi, who is at her most feminine, is overwhelmed by his persistent caresses and ends up being creampied. Since that day, her sex-crazed father-in-law has been relentlessly taking advantage of Satomi, his daughter-in-law with her ample breasts and voluptuous body, whenever he sees her face, regardless of the location.