Salvatore and Romolo are two young and poor young men that are neighbours and friends. They live with their parents in Piazza Navona, Rome. They are poor but handsome, and both fall in love with Giovanna.

Medieval soldier of fortune Ettore is traveling through Europe with his partners looking for a fight where they can earn some money. When they come across a Spanish castle under siege by the French army, Ettore bides his time to determine which side is the winning one. This is at first the French, but the treatment he receives from them is unpleasant enough to make him change his mind and turn to the Spanish side. Somehow, Ettore must rally the weakened Spanish troops to battle their enemy long enough for reinforcements to arrive.

Bepi, a gondolier with a girl in every port becomes entangled in too many romances. While Bepi is overly focused on a pair of gamine American tourists, fellow motor-boatman, Toni, threatens to steal away his childhood sweetheart.

In a small Italian town, the local youngsters realize that their youth is coming to an end and marriage will soon follow. They gather together for one last time in an attempt to revive their younger days, but this comes to a dismal conclusion. Gradually it dawns on the group that childhood is over and the next stage in human growth must be faced.

When a stage artist is send to fight he met a lovely girl.