In the Realm of Divinia, there are two kingdoms- that of the faeries, the Sallow Kingdom, and that of the vampires- the Nightingale Dominion. Faeries and vampires have been at war since the beginning of time, and hostility continues to run rampant between the two nations. When Dorian Nightingale, the vampire crown prince, is accused of killing a member of the Sallow royal family, war is imminent. He's forced to accept the help of his mortal enemy, faerie heiress Ainsley Sallow, to prove his innocence and prevent the total damnation of both their worlds.

After the disturbing secret Ainsley discovers laying beneath Fae, she is forced to navigate a new political sphere that is unlike anything she was ever taught. On opposing ends of Divinia once more, Ainsley and Dorian must tackle the looming threats within their nations and the increasingly likely Faerie-Vampire war as they reunite. With the empress ill and the north growing cold, Ainsley sets out on yet another journey to prevent her empire from tearing itself from within as the feelings between her and her mortal enemy grow infinitely more confusing.