The storm clouds of war have burst forth upon the denizens of Appalachia, and no one is safe. At Emmett Mountain, a desperate defense is waged against an overwhelming force, while at Foundation, an even more insidious plan is put into motion. 

Deep inside her lab, Major Lilith finds herself hunted…but who is the predator…and who is the prey?

Day and the Overseer make final preparations to break into Vault 79, unaware of the greater dangers facing the region, and the Colonel races against time as she leads a rescue force into the mountains of the Savage Divide.

Not all is well at the Whitespring as Major Stein returns, discovering that MODUS has plans of his own for the future of Appalachia and Trader Red finds herself in the deepest depths of the Mire…perhaps only steps away from her destiny.