A young man eagerly prepares for triumph as a boxer in a neighborhood gym with the firm intention of escaping poverty to marry his girlfriend, who sings in a nightclub.
| Actor | Role |
|---|---|
 Javier SolísJavier | Javier |
 Fernando SolerDon Fer | Don Fer |
| SSonia LópezSonia | Sonia |
 Joaquín CorderoArturo | Arturo |
| OOscar MadrigalHimself | Himself |
 Ramón ValdésGancho | Gancho |
 Gina RomandAmante de Óscar | Amante de Óscar |
| CCarlos LeónDoctor | Doctor |
| CCecilia LegerDoña Encarna | Doña Encarna |
| AAntonio «Pícoro» PadillaPresentador de boxeo | Presentador de boxeo |
| MMario SevillaMaestro de ceremonias | Maestro de ceremonias |
| CChelo La RueNot listed | Not listed |
| FFelipe de FloresNot listed | Not listed |