Colonel Reynolds and his group of government scientists continue their work on re-animating the dead for military use. His son Curt and his girlfriend Julie use Dad's security pass to sneak in and watch the proceedings. Later when father and son have a disagreement, Curt and Julie take off on a motorcycle and Julie is killed in an accident. Grief-stricken, Curt takes her body to the lab and brings her back to life. Curt must help Julie deal with her new existence as military agents and local gang members try to find them.
Following an ever-growing epidemic of zombies that have risen from the dead, two Philadelphia SWAT team members, a traffic reporter, and his television-executive girlfriend seek refuge in a secluded shopping mall.
When a bumbling pair of employees at a medical supply warehouse accidentally release a deadly gas into the air, the vapors cause the dead to re-animate as they go on a rampage through Louisville, Kentucky seeking their favorite food, brains.
A man decides to turn his moribund life around by winning back his ex-girlfriend, reconciling his relationship with his mother, and dealing with an entire community that has returned from the dead to eat the living.