A mad scientist implants an electronic device into the brain of an injured soldier, which turns him into a psychotic killer.

Judith Fontaine is looking for her sister Joanie, who has disappeared into the hippie community of Venice, California. It turns out that Joanie has become fallen victim to Groton, an ax-wielding homicidal maniac under the employ of Dr. Durea, the last living descendant of the Frankenstein family and is now both running a house of horrors on the beach's boardwalk and performing experiments on Gorton's victims in his basement laboratory.

Amir, the benevolent ruler of Kalid, is dying, but there is hope. Freshly deceased, he is flown to the United States where Dr. Trenton transplants his brain into the body of a simpleton in a classic "assistant got the wrong kind of body" plot line. Dr. Trenton has a few nefarious plot twists of his own in mind, and then there's the thing with the dwarf and the women chained in the basement. It's up to Amir's friend Bob and wife Tracey to try and salvage this tale.

The Satans, a sadistic biker gang led by Anchor, go to a diner in the middle of the California desert where they terrorize owner Lew, waitress Tracy, and the patrons. One patron manages to escape, and must reach a town before the Satans catch up to and kill them.

A magician in a carnival--who actually can read minds and levitate people and objects--works with a superintelligent chimp named Alex, who can also talk. The magician and the chimp soon become the stars of the carnival, drawing in big crowds. However, the wild-animal trainer, who has been displaced by the team as the carnival's top act, decides to kidnap Alex and sell him to a medical laboratory for experimentation, thereby getting rid of his competition.