A yeti-like monster is stalking the mountains of rural Mexico, sometimes displaying the powers of hypnosis. It ultimately plays a part in destroying two shady characters.
| Actor | Role |
|---|---|
 Joaquín CorderoJorge Méndez | Jorge Méndez |
 Ana Bertha LepeLupe Moctezuma de Méndez | Lupe Moctezuma de Méndez |
 Andrés SolerDr. Moctezuma | Dr. Moctezuma |
 Antonio RaxelMorris | Morris |
 Elizabeth DupeyrónLita Méndez | Lita Méndez |
 José ChávezNot listed | Not listed |
 Jorge RussekNot listed | Not listed |
| SSalvador LozanoIngeniero | Ingeniero |
 Víctor AlcocerGorila | Gorila |
| JJosé DupeyrónEsbirro del gorila | Esbirro del gorila |
| DDavid HayatAlberto (Beto) Moctezuma | Alberto (Beto) Moctezuma |
| MMagdaleno BarbaEsbirro del gorila | Esbirro del gorila |
| AAurelio SalinasNot listed | Not listed |
| CCarlos SuárezNot listed | Not listed |
 Armando AcostaNot listed | Not listed |
| FFelipe del CastilloObrero | Obrero |
| JJesús GómezPedro | Pedro |
 Margarito LunaAntonio | Antonio |
| JJosé Raúl MenaObrero | Obrero |
| JJoaquín RocheObrero | Obrero |