Donato, a scoundrel music manager, to escape the two henchmen of a boss who, due to his inefficiency, has caused him to lose a lot of money, taking advantage of a letter from his uncle the bishop, introduces himself to the parish priest of a village church, Don Dino, dressed as a priest, and pretends to have been sent there by the bishop as assistant parish priest. Don Dino's church is always empty. In fact, the town's faithful frequent the new church, run by Don Gabriele, a pimp priest who knows how to deal with people. Donato's arrival initially seems like the final blow for Don Dino's church: Donato doesn't know where to start a mass, he has never confessed or married anyone, the mere idea of performing an extreme unction scares him. Don Dino begins to argue with Donato: he seems anything but a priest. But little by little, Don Donato's extravagant ways, his open-mindedness as a "sinner", his mentality as a rock priest, begin to attract the faithful.