An AWOL soldier with PTSD goes into hiding alongside along with his brother and some mates. They retreat right into a rural farm space unaware that the surface world has ceased to perform. On their approach again to civilization, his brother is attacked by an contaminated farmer. He rapidly morphs right into a rabid animal and lives for precisely three hours. Realizing they're in grave hazard, they head again to the forest attempting to survive the legions of the contaminated.