An office worker must replace a twin brother who is a boxer.
| Actor | Role |
|---|---|
 Pedro QuartucciGervasio / Candelario | Gervasio / Candelario |
 Amanda VarelaIrene | Irene |
 Pablo PalitosNot listed | Not listed |
 Lalo MalcolmNot listed | Not listed |
 Roberto BlancoNot listed | Not listed |
 Fernando CamposNot listed | Not listed |
| DDelfina FuentesNot listed | Not listed |
 Delia GarcésNot listed | Not listed |
 José OtalNot listed | Not listed |
| JJuan PecciNot listed | Not listed |
 Eva Duarte de PerónNot listed | Not listed |
 Ilde PirovanoNot listed | Not listed |
| LLuis Elías SojitNot listed | Not listed |
 Tilda ThamarNot listed | Not listed |
 Malisa ZiniNot listed | Not listed |
 Andrés Gregorio ScottoÁrbitro | Árbitro |
 Raúl LandiniÉl mismo | Él mismo |
 Pepe AriasÉl mismo en pelea final | Él mismo en pelea final |
 Alicia VignoliElla misma en pelea final | Ella misma en pelea final |
 Chela CorderoElla misma en pelea final | Ella misma en pelea final |
 Luis SandriniÉl mismo en pelea final | Él mismo en pelea final |