Lino lives in Turin with the family of his sister. He doesn't have a good job and never enough money. But in a day his life changes: he wins 1 billion dollars in a lottery and... everyone becomes a friend, the girl who he liked becomes his girlfriend and his sister begins to love him. He leaves Turin with his friend Parola and, in a casino, he loses all money! But luck returns...

Some friends in an earl's mansion (where one of them works), try to get rich quick by scamming an Arab sheik and then invite a rich Californian heiress to Rome, interested in weaving a relationship with an Italian nobleman.