Antonio, Peppino and Lucia are three brothers who live in the country near Naples. Lucia's son, Gianni, goes to Naples to study medicine, but there he knows a ballet dancer. They fall in love and, when she goes to Milan, Gianni follows her. Informed of this and afraid that their nephew will stop studying, the three Caponi brothers leave for Milan to persuade Gianni to come back and continue studying and abandon the "Malafemmina" (bad girl).

Antonio goes to Rome to represent his fellow peasants, to request a highway that will be built in their region. But the guy is mastered by 'la dolce vita' and wastes the money entrusted to him for his mission. When Peppino is sent to to find out what happened, he lets himself be trapped by the gentle grip of 'la dolce vita'

Antonio goes to West Berlin and meets Giuseppe. But Antonio looks like Canarinis, a wanted war criminal, So the daughter of the criminal pays Antonio to impersonate him.

Antonio and Peppino live in a small town in central Italy: Peppino is the barber, Totò is maintained by the rich but avaricious wife Teresa.

A psychiatric-clinic medical director runs some tests on two patients, the Ragionier Antonio Vignanelli and Cavalier Peppino Caprioli, so they must retrieve some memories of family life in order to understand their mental illness.

Rocco and his brother Martino are two rich country-estate owners who descend upon the city in search of adventure.