When the couple decides to buy a home, Yu ends up working as a housekeeper at the home of a novelist she found on the internet. However, the novelist's orders are absolute, and she is unable to resist his carnal desires, even ending up with him ejaculating inside her. From then on, the novelist's actions escalate, and instead of working on his novel, she ends up training his pussy, satisfying the sexual needs of her editor, and finally training him right next to her husband, who has come to check on her. Her body, devoted to her husband, becomes a human toilet.