While her husband was on an overseas business trip, Mai was suddenly raped by a stranger on the way home from shopping, and was suffering because she couldn't talk to anyone. One day, she meets Yoshino, a deep psychologist. Yoshino instantly understands Mai's troubles and releases her from suffering with special counseling. Since then, Mai, who believes in Yoshino and becomes obedient, secretly has a relationship by staying at home without telling her husband. However, Yoshino's true purpose was to take over Mai's house and keep her as a pet.