Construction worker Douglas Quaid discovers a memory chip in his brain during a virtual-reality trip. He also finds that his past has been invented to conceal a plot of planetary domination. Soon, he’s off to Mars to find out who he is and who planted the chip.

Dr. Lorca, an eccentric collector of biological oddities – has just “acquired” his greatest specimen: a horrible mutant born of toxic sewage, but the creature’s rightful owner wants it back. The collector’s clash is cut short though, as the sickening specimen comes to life, re-animating an angry, oozing little army of ferocious freaks