Tabbris, the Angel of Free Will, is in Hell. Worse, the keys to the gates of Heaven and Hell have gone with him. Now, the hounds of Hell are close on his heels as he fights a desperate battle to keep the keys out of infernal hands, while trying to reach Earth once again. At least he prevented Adelaide from being dragged down with him. Meannwhile, Adelaide is still possessed by the Angel of Visions, and Iaoel seems to be planning to stay, regardless what Addy wants. Now, she's in search of a rogue angel to try and find a way into the underworld to try and rescue Tabbris... Before all Hell breaks loose.