Misono, a part-time housewife with striking big breasts against her fair skin, lives with her salaryman husband and his younger brother. One day, her husband, who is about to be promoted to department head, brings his direct superior, the executive director, home. The executive director can't stand still or sit still after being introduced to Misono's prominent breasts, and the next day he visits her alone. He uses her husband's promotion as leverage to demand her body... !