Chitose is a married woman with a husband who has become impotent and a teenage son. Her days are filled with sexual frustration, as her sex life consists only of masturbation, and she is also worried about her son, Akira, who is being bullied at school. One day, she discovers that the reason Akira is being bullied is because of her own overly voluptuous breasts. To help him, she decides to care for her son's heart and body using her own physical form...