It slithers. It slides. It nibbles. It gnaws. It burrows through skin to set mind and body on fire. It's parasite, and it's coming to get you! After a lab accident unleashes genetically engineered parasites that grow to giant proportions, it's up to one brave man to stop them. Demi Moore co-stars in this harrowing, futuristic portrait of a world gone mad ... and bugs gone big.