When foreman Frank shows new employee Freddy a secret military experiment in a supply warehouse in Louisville, Kentucky, the two klutzes accidentally release a gas that reanimates corpses into flesh-eating zombies. As the epidemic spreads throughout the town, and the creatures satisfy their hunger in gory and outlandish ways, Frank and Freddy fight to survive with the help of their boss and a mysterious mortician.
The friendship of a group of young friends struggling with teen sex, drugs, and work is jeopardized by a romantic interest which may turn pals into bitter rivals.
Two brothers camping with their cousin try to frighten each other by telling stories. They start with urban legends, but then there are two main narrations: one involves strange happenings at an elementary school; the other, a teenage boy with a peculiar interest.
Having recently witnessed the horrific results of a top secret project to bring the dead back to life, a distraught teenager performs the operation on his girlfriend after she's killed in a motorcycle accident.