John Carradine narrates five horror tales, each with a comically predictable surprise ending. In the first, "The Witches Clock," the Farrells have purchased an old mansion in Salem Massachusetts and are warned by the town doctor of the history of witches in the community. The second story, "King of the Vampires," deals with a slight-figured killer called the King of the Vampires by Scotland Yard. The third, "Monster Raid," is about a man turned zombie when he ODs on his experimental drug. "Spark of Life" deals with a doctor Mendell obsessed with the experiments of a thrown-out professor named Erich von Frankenstein. "Count Alucard" is a variation on the Dracula story, with the Count acquiring the deed to Carfax Abbey from Harker as vampiresses and dead bodies start turning up.

In 1974, four astronauts, silver shoe-clad Dorothy, overweight Doc, goofy Charlie, and wooden Steve, crash land on Mars when taking readings, with only four days of supplies. They must try to survive on the surface, which is barren except for some canals with huge maggots with fins. After embarking through a golden igneous cavern, braving a storm and finding an unmanned Earth vessel, they discover a golden road which leads them to the unchanging ruins of what was once a beautiful Martian city. The Martians are modeled on the Flatheads of Oz, and their collective consciousness, the "Wizard," forbids them to leave until they perform a very small task...

A group of teenage girls spends the night in an old dark mansion as an initiation into a college sorority. What they don't know is that the building is actually the headquarters for a mad scientist and his hunchbacked assistant, who are experimenting with turning humans into gorillas.

Small-town sheriff discovers that gun-fighting is the only way to clean up the town.