A Neapolitan Vincenzo LoRusso that lives of expedients in Rome, as he tries to sell at an intersection a faux suede jacket, accidentally meets Laura, a beautiful woman who invites him to her house. Between the two it is now a passion, but the unexpected arrival of her husband will be the beginning for Vincenzo a new experience as it will be paid by it to have been caught in bed with his wife, and unlocked it from its psychological impotence. Well briefed by the modern couple of theories of William Masters and Virginia Johnson, though without real expertise will open a sexology center to solve the problems of couples and to earn as much without ever having to make do to support his family.