Frank and Barny are agents of the PBI - Pornographic Bureau of Investigation, sent by Chief Rank, Head of Vice, L.A. District, to go down on the dirty crime spots of Hollywood. Mousie's Hot Shoppe is an adult bookstore where the owner is as much titillated as his customers by the material on sale. The agents are surprised to uncover that Mousie knows Chief Rank all too well, but it comes handy as he is willing to be an informer. So, the agents "discover" the Travelling House of Pleasure, a door-to-door delivery service of of Eastern Delights, the Good Time girls. The agents move next against the Nature Film business where a shady film director operates. Barny dresses as a woman for a casting session, and his act is too convincing for the lusty Director. Frank and Barny enter the dark Porny Theater easy, for the ten dollar admission fee; there is each man for himself, in a see of pleasure sources. Finally, it comes down to a battle of the sexes, when Barny fights off the advances of the notorious sex transvestite Peaches LaFemme.