A group of archaeologists break into the tomb of an ancient Aztec general, arousing the warrior's head and sending his undead servant out to take revenge on the careless scientists.

Two journalists, Carlos and Lola, investigate the murder of a young woman whose body appeared with her heart torn out, in what seems to be a human sacrifice. The investigation leads the reporters to a museum, whose director is the famous Doctor Gallardo.

Wrestler vs mad-scientist with werewolf serum.

The Blue Demon faces a murderous satanic hypnotist.