Sumi is an excellent worker, but her constantly domineering attitude puts immense stress on her subordinate, Sakurai, who decides to hire a delivery health service to relieve himself. One day, he visits a mysterious shop introduced by an acquaintance called "Acquaintance Delivery Health." As he waits, Sumi suddenly arrives at his door. Shocked, he initially thinks it's a prank, but she immediately begins spewing filthy talk and aggressively taking on a dominant, sexually assertive role. The next day, when he confronts her, Sumi claims to have no memory whatsoever of him using such a service.