After an apocalypse, mankind has depleted all fossil fuel reserves and civilization has collapsed. A group of survivors called ''Foragers'' take cover in an abandoned hospital where the group attempt to re-build society. After saving a young girl from being killed and eaten by a group of vicious cannibals called ''Rovers'', the Foragers find themselves on the run from the cannibals, who stalk the survivors and brutally kill them off one-by-one as the Foragers begin to fight back, causing a chaotic battle of blood and mayhem.