Explorers of the Unknown [Red [Archie Andrews]; Nitro [Reggie Mantle]; Squint [Jughead Jones]; Wheels [Betty Cooper]; Gizmo [Dilton Doiley]; Spike [Moose Mason]]; Dr. Zarkon; Johnny Carson (cameo); Ed McMahon (cameo); Loch Ness Monster (cameo-flashback); Abominable Snowman (cameo-flashback); Bigfoot (cameo-flashback)
As Red Andrews recounts some of his adventures to a live TV audience, he gets an emergency call from the Explorers. Spike, Nitro, Wheels, Squint, and Gizmo all get the same call. Meanwhile, Dr. Zarkon plots against the Explorers.
Brought together by Angel and her father, Hiram Lodge tells the team of a disgruntled scientific genius who's now threatening his corporation and Riverdale. The team splits up: Red, Angel and Gizmo go to stop Dr. Zarkon, while Spike, Nitro, Wheels and Squint travel to Riverdale to stop Dr. Zarkon's monsters.