A father living with his son and daughter-in-law is hospitalized after a mild cerebral infarction, then returns home for recovery. The daughter-in-law is in charge of his care. One day, while the father is lying down, the son demands his wife's body and has her service him with her mouth. However, the father-in-law is awake and watches the scene from the corner of his eye. Furthermore, the father-in-law also peeps at the daughter-in-law having an affair with a delivery man. The father-in-law, who had long seen the daughter-in-law as a woman, confesses that he witnessed her affair and begs to do the same with her. Though hesitant, the daughter-in-law gradually opens her legs and begins to feel aroused.