It’s been three years since Lee Harden emerged from his bunker into a world gone mad.

In the United Eastern States, Lee and his team of battle-hardened operatives walk a tightrope of survival. Their goal: To keep their fledgling society safe from the creatures beyond their gates and from the enemies within.

Then, an ambush in hostile territory reveals a traitor in their midst.

Lee is left barely clinging to life.

Wounded and on the run, Lee and his team race to uncover the leak before it’s too late.

Through a background of destruction, betrayal, and newly-evolved apex predators, they must stay one step ahead of a ruthless organization heading their way…

… an organization that has allied with someone who wants Lee dead, and the United Eastern States demolished.

But how do you stay ahead of an enemy that knows every move you make?