Fallen angels have trespassed into Heaven for the first time in eternity. Prepared for battle, Heaven's General and the most powerful Archangel, Michaela, opens Heaven's gates to confront the fallen. In Purgatory, it's not a battle she finds, but a betrayal of the worst kind.

One simple mistake with a thousand consequences.

Framed for the fallen's attack on Heaven, Michaela is left for dead in a dark cave on Earth, where Clark, an unlikely pink-haired ally with a penchant for Jack Daniels, finds her. With the help of her new friends and Gabriel, an Archangel whose friendship blurs into something more, Michaela must prove her innocence.

The holy angels have a plan for Heaven, and it may prove to be the End of Days.