Through a series of coincidences Carrie Dan and Dr. Hartmann all fall through a teleporter device Hartmann has invented. Transported to a what appears to be a prehistoric world in a parallel universe and unable to find the Doctor Dan and Carrie must figure out a way to get back home. Before they can do that however they must deal with tribes of savage cavemen as well as brutal warlord named Kleel who has taken a liking to Carrie and seems to be unusually well-supplied with Earth technology.