Mei, who works as a social welfare officer with her husband, mainly visits the homes of elderly people living alone. One day, she finds Mr. Satomura injured and unable to move on the veranda of his house. Mei takes care of his daily needs. On another day, while cleaning the stairs, Mr. Satomura suddenly embraces her. When he buries his face in her crotch, Mei resists but is affected by his lascivious caresses. Noticing this, Mr. Satomura becomes even bolder, demanding cunnilingus even in front of her husband.