Armando Conforti, his family and his friends have a business: they sell souvenirs near St. Peter's, in Rome, they change dollars, in short they get along.

Romolo and Salvatore look for jobs to impress their girlfriends, but things get complicated when their old flame Giovanna reappears.

For the 17-year-old Mariza, there is no other house than the train station in Civitavecchia. Here, an orphaned girl lives early after the death of her father, a railwayman; here she earns additionally at the station buffet, selling ice cream to passengers of passing trains. Beautiful and brisk, she was accustomed to the admiration of others and perfectly mastered the art of coquetry, but Marise’s heart remains calm until the young sailor Angelo, who is in a hurry on her first voyage, leaves the train on the platform on a sunny Sunday morning.

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.