It's been three years since the undead dragged mankind kicking and screaming from the top of the food chain and sent him scurrying into the dark corners of a dead world.

For a beleaguered band of survivors in southern Arizona, life is about to go from bad to worse. The rains have failed and, they have no choice but to leave the safety of their home in search of water. But before they can make their move, they must face a new threat from the undead, a threat beyond anything in their worst nightmares.