David doesn't believe in angels. He doesn't believe in the devil. What better place for the key to Lucifer's prison to hide than in someone who doesn't believe in any of that? When Lucifer discovers where the key to his prison is located, he sets out to claim it. The only thing standing in his way: the Exiled. For ages, they've fought to keep Lucifer and those who stand beside him contained within the prison. It's a war between angels and fallen angels. Between Exiled and Imprisoned. Between brothers and sisters. And the Exiled are losing. By a stroke of luck (or is it Fate?), Celeste and David cross paths, and the ongoing struggle to contain Lucifer takes a new turn as David discovers the world he has always known is not what it seems, that angels don't wear halos, and his lack of belief doesn't matter. Lucifer wants the key to his prison - and he'll stop at nothing to get it. Celeste may be Exiled, but she's still an angel... still sworn to protect humanity - and that includes David. Protecting him from her Imprisoned brothers and sisters isn't her only problem, though. She's attracted to David like a moth to a flame, but angel Law strictly forbids any kind of intimate relationships with humans. Not even a single kiss is allowed. She knows why it's forbidden, but that's just a rumor...