Santo fights diamond smugglers.
After facing defeat at the hands of Cristaldi the magician, Dracula is back to seek revenge and rule the world. With the help of Wolfman and his legion of followers, victory seems eminent. Professor Cristaldi, a descendant of the magician, is warned about Dracula's plans and calls upon El Santo and Blue Demon in the hopes that they can put the infamous Count and the werewolf down for good.
Santo must battle an evil witch and the demons and evil spirits she brings up from Hell.
Gloria Venus and Golden Rubi are tag-team Luchadoras, helping a scientist on a quest to discover an ancient Aztec treasure, but the fiendish Prince Fugiyata wants to get there first. Both are in for a surprise, as the treasure is guarded by Xochitl, the Aztec Mummy Sorcerer, who can turn into a bat at will.
A group of would-be beneficiaries gather for the reading of a will, and discover that they must spend the night in a spooky castle to gain their inheritance. A spooky housekeeper and a man who seems to be a vampire are just two of the obstacles that might deter them.
A mad scientist terrorizes a city by kidnapping young women with his ape-man Gomar and then using them as subjects in sadistic brain transplant experiments. A female wrestler whose sister was one of the victims swears vengeance against the Mad Doctor.