In late 19th century Sicily, handsome free-spirit Liolà wanders into town, where he encounters an old flame now married to a wealthy landowner.

As Garibaldi's troops begin the unification of Italy in the 1860s, an aristocratic Sicilian family grudgingly adapts to the sweeping social changes undermining their way of life. Proud but pragmatic Prince Don Fabrizio Salina allows his war hero nephew, Tancredi, to marry Angelica, the beautiful daughter of gauche, bourgeois Don Calogero, in order to maintain the family's accustomed level of comfort and political clout.

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.