The fortunes of a humble mechanic and his teacher girlfriend, who teaches on a streetcar and is about to lose her sight, change when a talent scout promotes him as a singer, buys a school, and pays for the operation.
| Actor | Role |
|---|---|
 Rosanna FalascaNot listed | Not listed |
 Juan RamónNot listed | Not listed |
 Antonio BarriosNot listed | Not listed |
| HHoracio BrunoNot listed | Not listed |
 Juan Carlos MarecoNot listed | Not listed |
 Hugo MarcelNot listed | Not listed |
 Johnny TedescoNot listed | Not listed |
 Nicky JonesNot listed | Not listed |
 Lalo FransenNot listed | Not listed |
| JJohnny AllonNot listed | Not listed |
| JJuan D'ArienzoNot listed | Not listed |
| CChiquita SaldíNot listed | Not listed |