The Secret Agent Lafargue locates the evil Professor Marcus headquarters, who with the help of Dr. Bellini and an android of his invention, plan to conquer the world. Lafargue is discovered and severely injured, so he is unable to remember where it is the basis of Marcus or what their plan. To resolve this situation the authorities call the Agent Zero team.

Los endemoniados del ring "Ángel" y "Satán" no aceptan por ningún motivo la propuesta de dejarse ganar por "Tarzan Beto" ídolo del momento pero con artimañas. En 1966 se rodó una secuela bajo el título La mano que aprieta.

1972 film by Emilio Gómez Muriel

1960 film directed by Emilio Gómez Muriel

The evil scientist Dr. Caronte plots to revive the brains of three dead scientists and use them to obtain the formula for the super-powerful neutron bomb. The resulting creation needs blood lots of blood, sending Caronte's midget assistant Nick and his legion of mutant monsters out to get fresh victims. However, the masked atom-superman Neutron vows to put a stop to Caronte's deeds.