A pair of Americans want to perform the greatest robbery: the treasure of San Gennaro, in Napoli.
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.
Cassio, a tourist guide, and Primo, his bus driver, are taking a bus load of tourists to visit villa Jovis, at Capri island. Then they have an accident, and they knock their heads hard, losing conscience. They come awake in the times of the Roman Empire in Tiberius' villa.
