The zombies are taking over Hogback! Groups of human Survivors band together against the small horde of Zombies until they are infected. If infected survivors are unable to reach a Nurse tent with a Medic Badge in time, they join the Zombies and resurrect at the Graveyard.
As the Zombie forces grow the dwindling group of Survivors must attempt a Left For Dead run to the extraction point, and protect their Stronghold.
Eventually, the Last One Standing will finally be overrun. Once there are no humans left to contend with, the three Zombie Lords will battle it out for supremacy in the Zombie Rumble.