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).
Totò
as Antonio Caponi
Peppino De Filippo
as Peppino Caponi
Dorian Gray
as Marisa Florian
Teddy Reno
as Gianni Caponi
Vittoria Crispo
as Lucia Caponi
Mario Castellani
as Mezzacapa
Nino Manfredi
as Raffaele
Linda Sini
as Gabriella
Salvo Libassi
as amico di Marisa
Luisa Ciampi
as la figlia di gianni e Marisa
Corrado Annicelli
as il duca
Edoardo Toniolo
as Remo
