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.

A faceless killer who hunts women can only be stopped by a detective with a disturbing past.

Marcos is an arrogant jai-alai player who seduces and discards women until he himself becomes the object of a cunning revenge.

In this Mexican sci-fi fantasy, big beefy Martians invade the earth. Ostensibly, they have come to warn people about the dangers of nuclear testing and exploring space, but their real mission becomes manifest when they begin using their special powers and gadgets to exploit weak earthlings.