Whereas working in a greenhouse, a person receives an insect chew after touching an unique plant. Instantly, he falls in poor health and is taken to an emergency room the place the docs diagnose him as affected by an unknown micro organism, and a wierd parasite which emerges from his mouth as a big slimy wormlike creature. Quickly, there are extra instances of bacterial an infection, however the extra rapid downside for the hospital is the wormlike creature which after unintended publicity to a genetic development stimulant grows to monstrous proportions and begins a reign of terror and bloodshed within the hospitals deserted wing.