After a parasitic species known as the Revenants attacks Earth, humans survive behind the safety of the Dome--an enormous energy field capable of fending off the alien invaders. After an assault that lasted just five years the Revenants disappeared, but the damage had already been done. The world outside was now overrun with carnivorous jungles, barren deserts and twisted monstrosities as the Taint they left behind spread across the globe, infecting all things organic and machine. But, safe behind the wall, life carried on. Now thirty years later, with a rebellion mounting against the totalitarian Foundation and the farms yielding less crops each harvest, the Dome may be on the verge of a civil war. And that's to say nothing of the Taint that's been slowly spreading from within, giving rise to mutants, or the unconfirmed rumors of Revenant sightings outside the Dome and the one girl who could prove to be humanity's last hope . . . or their final downfall. ************* Soldier. Survivor. Savior. As a soldier for the Dome's paramilitary defensive unit known as the Division, Sergeant Samira "Sam" Blackwell fights for more than just the future of humanity. Her younger sister suffers from a rare disease and the medication necessary to keep her alive is expensive--especially for a family living out in the Fringe. So when a routine scouting mission outside the wall is ambushed by an ancient enemy, Sam will do everything in her power to make it back alive. Even if that means bonding with the same alien species that she's been taught to fear. And with tensions rising between the Foundation and the rebellious Coalition that seeks to overthrow them, the last thing Sam wants to be is caught in the middle. As she struggles to make sense of the entity that now inhabits her body and determine friend from foe, Sam soon finds herself walking a dangerous line between her own survival and a dark truth that could threaten the Dome's very existence.