Agrupación de Técnicos Cinematografistas de Cuba

In his first film El Santo was still referred to as ‘El Enmascarado’. Rendered compliant by a scientist and his gangsters via a serum and mysterious rays, he is forced for the opening act to be a henchman for the evil forces who want to take over the world. The film has great historic value, due also to its impressive exterior shots of pre-revolutionary Cuba 1959.

Agent Joaquin recalls his latest mission while lying wounded in an ambulance: Joaquin has infiltrated into a band of smugglers. When the villains learn the truth about him, they kidnap Jouqin's fiancee. Santo comes to her rescue and fights the band.