When the lone survivor of a secret research installation wanders out of the desert, barely alive and babbling about demons hunting through the halls, the Templar Order is quick to call in Cade Williams and his Echo Team combat unit. Their orders investigate the facility, determine exactly what happened there, and deal with any infernal presence that might exist. But the being they encounter there beneath the desert sands has found a way to break the bonds of Hell itself and doesnt plan on going back easily. This time, their foe might prove to be too much for even the men of Echo Team.