Colonel Reynolds and his group of government scientists continue their work on re-animating the dead for military use. His son Curt uses a stolen security pass to sneak in with his thrill-seeking girlfriend Julie, with shocking, deadly results!

A group of kids discover one of the drums containing a rotting corpse and release the 2-4-5 Trioxin gas into the air, causing the dead to once again rise from the grave and seek out brains.