On the run and gravely injured, the Fallen are scattered and hunted. Running for their lives and salvation, the Fallen race to the City, the subterranean refuge they've called home since the Fall. But the Archangels are not going to let them escape easily. They have plans to invade and have devastating new tools and weapons at their disposal. Dahlia, Lucifer, and the rest of the Fallen must make peace with their bloody pasts before they can come together and defend the Earth and life as they know it.