The story is about two witches. Both the witches are sisters, and they are trying to save themselves from their stepsister, who is also a witch, and she's trying to destroy their lives.
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.