A woman's jewels get stolen at the airport by a mysterious man. Captain Caveman, the Teen Angels and their friend Roger go after the thief but couldn't catch him as he boards a plane.
Captain Caveman and the Teen Angels are on a charter boat and chatting with a friend. He explains his father is being honored for his role in a play. Suddenly the lights go out and a necklace is stolen.
Captain Caveman and the Teen Angels are monitoring a fur delivery of Dee Dee's uncle, Frank Skyes. The furs inexplicably vanish from the truck on the way to the factory.
Rumors of a horse that is possessed by a demon seem to be true. Captain Caveman and the Teen Angels have arrived for the upcoming rodeo. In the course of their investigation, the bank gets robbed.
Captain Caveman and the Teen Angels go to a research facility. They spot an alien spacecraft's landed there. Soon they discover an alien robot may have stole a top secret energy source.
Captain Caveman and the Teen Angels attend a magic show at Farthington Mansion. With them is Taffy's Aunt Gladys. During the show some jewels are stolen. Captain Caveman and the Teen Angels investigate.
The star athlete Juice Brenner is kidnapped. Captain Caveman and the Teen Angels investigate and find Bigfoot took him. They find Juice in a cave and rescue him. But since then the athlete behaves strangely.