A group of teenagers who break into a secret government lab to steal a corpse as part of an elaborate prank soon realise their mistake as the body they take turns out to be part of the military's discontinued C.H.U.D. project.

When the corpse suddenly comes back to life and goes on a murderous rampage which turns its victims into cannibalistic killers, the teens must come together and put a stop to the chaos before it's too late.