In a kingdom where magic has been lost, Fia is a rare changeling, left behind by the wicked Fair Folk when they stole the High Queen's daughter Eala and locked the gates to the Otherworld.
When a hidden gate to the Otherworld is discovered, Fia is tasked by the High Queen to retrieve Eala and break her curse. But she doesn't go alone: with her is prince Rogan, Eala's betrothed and Fia's childhood best friend.
As the two journey into a world where magic winds through the roots of the trees and beauty can be a deadly illusion, Fia's mission is complicated by her feelings for the prince. . . and her unexpected attraction to the dark-hearted fae lord holding Eala captive. Irian might be more monster than man, but he seems to understand Fia in a way no one ever has.