Miharu Sakaki struggles as a full-time housewife devoted to raising her child. Though living an ordinary life, she harbors inner dissatisfaction due to the lack of sex with her husband. One day, while cleaning her son's room, she discovers her own underwear hidden there. From that moment, her attention begins to shift toward her son, and gradually, she starts craving his body... This story portrays the subtle emotional shifts hidden within daily life and the complexities of family relationships.