Tuberculosis and a passional crime prevent the final triumph to a boy from the slums who has opened his way in boxing.
| Actor | Role |
|---|---|
 Armando BóNot listed | Not listed |
 Laura HidalgoNot listed | Not listed |
 Santiago ArrietaNot listed | Not listed |
 Marcos CaplánNot listed | Not listed |
 Augusto CodecáNot listed | Not listed |
 Pedro LaxaltNot listed | Not listed |
 José Carlos MarroneNot listed | Not listed |
 SemillitaNot listed | Not listed |
| ZZita RosasNot listed | Not listed |
| MMauro CíaNot listed | Not listed |
| AAlfredo PorcioNot listed | Not listed |
 José María GaticaNot listed | Not listed |
| JJuan Carlos PrevendeNot listed | Not listed |
| AAmérico FernándezNot listed | Not listed |
| AAlfredo MarinoNot listed | Not listed |