Mara, Silvia and Irene, three sisters, are sent from Rome to Padua as guests of prof. Bordignon, their uncle. First, they let off steam with the young cousin Anselmo; then, realizing that their destiny is a boarding school, they take plot their revenge.
| Actor | Role |
|---|---|
 Franca GonellaMara | Mara |
 Christiana BorghiSilvia | Silvia |
 Ely GalleaniIrene | Irene |
 Carlo SpositoFederico | Federico |
 Nieves NavarroGaia | Gaia |
 Paola MaioliniAntonietta | Antonietta |
 Carlo MariniAnselmo, the cousin | Anselmo, the cousin |
 Renato PinciroliOttavio Bordignon | Ottavio Bordignon |
| FFabrizio CardinaliNot listed | Not listed |
| FFranco SpinazzolaNot listed | Not listed |
 Francesco PauCarletto | Carletto |