"Eri," a female employee at a certain company, is actually a masochistic erotic girl who works at a high-class masochistic erotic club, driving men crazy with pleasure every night. Not satisfied with that, she keeps her boss, the department head, as her pet and secretly enjoys lewd play with him in the office during the day. One day, a male colleague finds a masochistic erotic girl who looks just like "Eri" on an adult entertainment website and witnesses "Eri" and the department head engaging in secret office play. The man visits the masochistic erotic club where "Eri" works as a customer, and is toyed with by his colleague "Eri"'s techniques, violating him to the core!