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.

In Year 2025 Two Nevada border officers, Dave Quarry and John, amuse themselves off duty by honing their kick-boxing skills via virtual reality combat. Elsewhere, a computer tycoon prepares to market his company's latest invention, a combination of DNA and virtual reality that creates beings and creatures who look and feel real.