Clasificación IMDb: 3,7/10 (697 votos)
Director/es: Terry Marcel
Reparto Richard Hatch (Como Dan), Kay Lenz (Como Carrie Madison), John Saxon (Como Kleel), Peter O'Farrell (Como Malachi), Ray Charleson (Como The Greenman)
País: UK Estudio: Media Home Entertainment
Duración: 90 minutos.
Género Acción, Ciencia Ficción, Aventuras
Argumento: 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.