The story of a young man who meets his own likeness and uses him to fulfill his dreams.
| Actor | Role |
|---|---|
 Pierre ClémentiGiacobbe I and II | Giacobbe I and II |
 Tina AumontSalesgirl | Salesgirl |
 Sergio TofanoProfessor Petrushka | Professor Petrushka |
| GGiulio Cesare CastelloProfessor Mozzoni | Professor Mozzoni |
| RRomano CostaClara's father | Clara's father |
| AAntonio MaestriProfessor 'Tre Zampe' | Professor 'Tre Zampe' |
| MMario VenturiniProfessor | Professor |
 Alessandro CaneStudent | Student |
| GGianpaolo CapovillaStudent | Student |
 Ninetto DavoliStudent | Student |
 Vittorio FanfoniStudent | Student |
 Luigi Antonio GuerraStudent | Student |
| GGiuseppe ManganoStudent | Student |
| GGiancarlo NanniStudent | Student |
 Stefano OppedisanoStudent | Student |
 Salvatore SamperiStudent | Student |
| UUmberto SilvaStudent | Student |
 Stefania SandrelliClara | Clara |