Her husband, who was a truck driver until six months ago, quit his job and started drinking alcohol from noon. When Mitsuko came home from shopping, her husband was turned on by her butt and forced her to have sex with him. That night, Mitsuko soothes her heated body in the bath. When her son comes home from work and tries to get in the bath, he peeks at his mother masturbating. After the bath, as Mitsuko is drinking water, her son hugs her from behind. He loves his mother and can't help it. Mitsuko refuses, but he pushes her down...