Addy's boss has been murdered... She's next. She's been folded into something that supernatural forces want, and it looks like she'll have no choice in the matter. Tab's been through hell to make sure this sort of thing doesn't happen - literally. The red-winged Angel of Free Will cares vehemently about individual agency in human destiny. How much he cares about Addy herself may be another thing entirely, but at any rate, she has a better chance with him than with the rest of the Angelic family, Fallen or otherwise. In a run for her life and a race in which the involvement of the Devil himself is considered among the least of their worries, Addy must find enough moments of calm to unfold the Angel's Grace inside her, learn from the visions it provides, and find the keys to Heaven and Hell.

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. Meanwhile, Adelaide is still possessed by the Angel of Visions, and Iaoel seems to be planning to stay, regardless of what Addy wants. Now, she's in search of a rogue angel to try and find a way into the underworld to rescue Tabbris... Before all Hell breaks loose.

They’d only just found each other, and now they’ve been separated again… Adelaide has been dragged deep inside her own mind to discover that she and Iaoel aren’t the only two inhabiting her body anymore. While two was company three is a crowd and Adelaide’s life hangs in the balance now more than ever. Meanwhile, Tab has been forced to leave her side and entrust her care to some unlikely guardians. So much remains unresolved just as more tribulations are piled upon them. Battles are waged at the gates of Hell and new discoveries made. The game is set, the pieces moving, but who are the real players behind them all?