Popular H-cup actress, Mina Kitano, infiltrates a sex shop in the downtown area! Under the rule that "you only play according to the rules of the store, but you can't refuse the act requested by the customer", Mina-chan is full of motivation, but there are no rules at three stores: men's esthetics, Deriheru, and M sexuality. - At the end, what happens to the regulars at the happening bar and the Mr./Ms. of the mayhem?