In the wake of a cataclysmic global war that saw widespread use of biochemical weaponry, flesh-eating zombies are overrunning the planet -- and a helicopter transporting scientists who are working on an anti-zombie serum is humankind's only hope for survival. When the chopper crashes and strands the researchers in the midst of Zombieland, the onus is on a special-ops squad (led by Richard Grieco) to bring them back alive.