In the first Italian film to be shot in color, Totò portrays a musician named Antonio Scannagatti who strongly hopes to sell his composition, "Epopea italiana", to Tiscordi, who is one of the most important Italian impresarios.
Antonio is the humble servant of a rich family governed by the Marquis Gastone. He is a young man madly in love with Lulu, but she betrays him, and he desperately enlist in the foreign legion.
Beautiful gold-digger Sonia mistakes Antonio, a waiter in a Neapolitan hotel, for Arab Prince Bey of Agapur and makes an appointment with him for the following day in Capri, and Antonio goes there behind the backs of his wife and mother-in-law. A lucky series of circumstances actually does transform him into the prince of the island.
