In the early 1970s, when everyone in America was worrying about Vietnam, the United States army was secretly developing a way to reanimate the dead. The hope was to have the dead - rather than the living - fight their war, but the experiments were shut down when the reanimated corpses were unable to control their hunger for human flesh.
Thirty years later the army has decided to reopen the project. Grover City, because of its remote location, would be the home of their main testing facilities. Without warning the experiments go awry and the dead are now on a rampage, eating every person in sight.
With the town overtaken by zombies, a group of high school seniors take it upon themselves to fight through swamps, forest, blood, and the undead and find a cure for this deadly epidemic.