Shiori's boss takes care of her drunk husband as they return home together. As they miss the last train, they decide to let her stay the night, but she accidentally sees him sexually servicing her husband. Her boss's unrequited devotion arouses his lower body, so after she leaves for work the next day, he sneaks back to the Kuraki house and lies to her, saying that her husband has caused damage to the company. Not wanting to make her husband's position any worse, Shiori decides to offer herself to him. This perverted boss trains this innocent young wife to be a slut to his liking.