Durante o conturbado processo de unificação italiana na Sicília, o príncipe Don Fabrizio passa a simpatizar com os ideais socialistas, mas não gosta da ideia de perder seu prestígio e privilégios.
When a good-natured factory supervisor living in Milan with his Northern wife returns to his native Sicily, a decades' old oath forces him to fulfill a nightmarish obligation.
In this comedy Alberto Sordi plays Rosario Scimoni, known as Sasà, an opportunistic and unscrupulous guy, nephew of the mayor of Catania, and he's always ready to take sides with anyone who can help him. He switches from socialism to fascism; he changes his political faith the same way he changes women. He even tries to found his own party.