A year later, Aaron is still traveling around the world with Camael and his dog Gabriel, redeeming the fallen angels he finds and striving to escape the Powers' wrath. A fallen angel known as Azazel is released from his prison by a shadowy figure, who enlists his help in "aiding the Redeemer in fulfilling his destiny." Camael, having been wounded in a battle with the Powers, goes to Ariel, a fallen angel who has the power to heal, who is also the leader of an organization that protects the Nephilim and the Fallen from the Powers.