Goro, Miki’s father-in-law, is a gifted masseur with a sterling reputation around the neighborhood. Miki has become extraordinarily sensitive all over since giving birth, while her husband, Daisuke, is away on a long-term work assignment. One day, Goro gives the exhausted Miki an oil massage to thank her for handling all the housework and childcare. He begins with no ulterior motive and genuinely wants to ease her fatigue. But as Miki trembles, squirms, and sighs under even his most innocent touches, contact with her hypersensitive skin slowly strips away Goro’s self-control...