Beautiful tax accountant Izumi Kurita serves as a financial advisor to President Ishii, who runs a metal workshop in a downtown district. One day, after President Ishii's daughter plays a cruel prank, Izumi is forced to urinate inside the workshop premises, and the incident is secretly recorded by the workers. Upon seeing the footage, President Ishii gives in to his lustful desires and kidnaps Izumi. She is locked inside a dimly lit tatami room, where over several days she is forcibly made to pee, wet herself, and eventually defecate. One day, while suffering from a high fever, Izumi is subjected to a compulsory enema in front of all the factory workers. The enema fluid forcefully gushes out of her anus. This act, filled with physical agony and deep humiliation, becomes the central event of the story.