In a world gone mad, the last human colony struggles to survive underground, beneath a land of nightmarish mutants who seek to destroy them. But when the mutant breaks inside humanity's final stronghold, the battle for survival pits the human colonists against their deadly invaders miles below the earth's surface.

• Concorde Pictures
• Andrew Stevens
• Stella Stevens
• Chick Vennera
• R. Lee Ermey
• Burton Gilliam
• Clare Hoak
• Larry Gilman
• Barbara Alyn Woods