A fighter lives haunted by the memory of a friend whom he believes he killed in the ring.
| Actor | Role |
|---|---|
 Martín KaradagiánRoberto "Pantera" | Roberto "Pantera" |
 Lilián del RíoSonia | Sonia |
 Orestes SorianiPadre de Roberto | Padre de Roberto |
 Perla SantallaLuisa | Luisa |
 José María PedrozaRodolfo | Rodolfo |
 Héctor ArmendárizMédico | Médico |
| RRaúl del ValleRaúl Ávila | Raúl Ávila |
| PPedro GoitíaBobby | Bobby |
 Javier PortalesHombre en tribuna | Hombre en tribuna |
 Menchu QuesadaMujer de Bobby | Mujer de Bobby |
| AAlfredo AlmanzaOficial | Oficial |
| RRodolfo GandaNot listed | Not listed |
| JJorge MonteagudoNot listed | Not listed |
| CCésar NagleNot listed | Not listed |
| JJuan Bautista MaggipintoNot listed | Not listed |
| NNelly RicciNot listed | Not listed |
| TTito WolfNot listed | Not listed |
| JJulio HerediaNot listed | Not listed |
| EEmma RussNot listed | Not listed |
| PPaula SvagelNot listed | Not listed |