A zombie outbreak sweeps across the country, sending desperate survivors on a race to find a cure in this feature adaptation of the popular video-game franchise. An anti-viral drug called Zombrex is being administered to those infected. When it becomes clear that the drug is no longer effective and a zombie outbreak purges the town and infects its inhabitants, Chase, Jordon, grieving mother Maggie , and survivor Crystal battle their way out of the city before it gets firebombed. But Crystal has a dark secret, and the army has a hidden agenda..