Kevin, Steve, and Katie are an inseparable trio of friends doing some extracurricular snooping in the school science lab when, among the test tubes and beakers, they discover a corpse! But before they can say "Abra Cadaver," the body disappears, rolling down Route 51 strapped to a gurney. The kids need a spare stiff, and fast. What they find is "Bud the Chud," a half-dead decomposing humanoid, the result of a military experiment gone haywire. When Bud sets out on a killing spree, the kids, the Army, the police, and the FBI are hot on his trail, trying to save the entire town from becoming "Chudified!?