The world is dead.
The army of walking corpses have conquered all before them and only small pockets of humanity remain.
As the cities slowly crumble, the survivors are facing their first winter in the new order while an immense horde of festering un-dead surrounds their walls, threatening their continued safety.
While Steve and Marcus struggle to keep their small band alive, a new threat looms over the horizon; a danger that no one could have perceived, and more devastating than the 'dead plague'.