Rui is a housewife who is satisfied with her normal married life. Their nighttime activities are also completely normal. However, her husband has a desire to engage in abnormal play. No matter how many times he invites his wife, she refuses, saying she doesn't like perverted play. Finally, the husband makes up his mind and asks a certain man to help her develop her sexuality. The next day, the husband asks his wife, "Would you like to work part-time as a housekeeper at your boss's house?" Rui starts working without any suspicion, but the plan to seduce her has already begun...