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).
as Antonio Caponi
as Peppino Caponi
as Marisa Florian
as Gianni Caponi
as Lucia Caponi
as Mezzacapa
as Raffaele
as Gabriella
as amico di Marisa
as la figlia di gianni e Marisa
as il duca
as Remo
as Marianna
as Giulietta
as agente di Marisa Florian
as moglie di Mezzacapa
as Un amico
as il maitre dell'Hotel (uncredited)