A beautiful black-haired woman works at a girls' bar, entertaining older men who appear to be salarymen. The trio behaves crudely and lewdly, openly toying with her as if she were their older sister. However, in an instant, their attitude shifts—becoming even more perverted. The reason? To their surprise, she actually has a penis. Once the old men realize this, their excitement intensifies, and they begin making one outrageous demand after another. What follows is an unexpected turn of events.