Yuki, who has never had confidence in herself, has dedicated herself to her family so that her existence may be acknowledged, and has continued to play the role of a good wife and mother. However, she feels that her husband does not see her as a woman, and spends lonely nights pleasing herself. One day, Yuki accidentally shoplifts on impulse and is raped by the store clerk. Then her son sees the scene... She shakes her white breasts and writhes as she writes about her feelings... immoral big-breasted incest!