Princess Elfie has always lived the fairytale life of being royalty as well as thrived on the benefits that accent the throne. After an attack on a small village that Elfie was visiting occurs, leaving her scarred and injured, her world slowly starts to unravel. She feels utterly alone until her father assigns a personal guard to her, her movements now constantly having a vast shadow. Sin is quiet, cold, emotionless. Always hovering, but always silent. And as more threats start to drift over the kingdom, Elfie realizes that Sin might be just what she needs to unlock all the deep and twisted secrets that threaten to devour all their souls whole.
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.