As a consequence of a stupid bet, two powerful businessmen, the actual leaders of the Principality of San Clito, decide to swap sweet and pure Princess Sofia with Helga, the queen of sex, a nymphomaniac prostitute. Thrown out of the palace, romantic Sofia becomes a guest of the Blue Pussy, a luxury whorehouse, where she is exposed to the sexual fantasies of men who submit her to their lucious will. On the other side, Helga, the whore, who has a hard time understanding “good manners”, is suffering of her present poor sexual life, due to the etiquette. So, she decides to make a pilgrimage to the Blue Pussy where she meets... ex-princess Sofia...