Miki, whose husband is a domineering man, has been troubled by her husband's harsh attitude even after she started living with her daughter and son-in-law. One day, Miki forgets to do something he was asked to do, and in anger, her husband tries to hit her, but her son-in-law, Seiji, bravely steps in to stop him. Miki embraces her son-in-law in gratitude, but her voluptuous breasts strongly stimulate his groin...