After a freak accident in his past, Felix St. Claire was placed in jail. About eight years later, he reunites with his sister, Hanna, who is coincidentally the prison's newest cadet. Everything was peaceful and quaint in the town of Black Hollow until a series of people in the prison start disappearing without a trace. Doubly peculiar to that, not only are they disappearing, but they are being wiped from everyone's memory and only Hanna and Felix have noticed! It isn't long before the siblings are attacked by a black mass of darkness and transported to an Empty World. All while discovering they both inhabit such magical abilities. Hanna is a Seer; a person who is supposedly able to see what the future holds through supernatural foresight. While Felix is a Mage; a practitioner of magic or magical elements derived from supernatural, occult, or arcane sources. They soon find themselves thrust together in an eerily empty wasteland of a town, forced to solve the mystery of these disappearances, while learning of a supposed threat haunting their every move. What does this new world have in store for them?
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.