In the fourth book, the book of spells was protected by Xia, the queen of light who was trying to protect her newborn child from her cruel, and antagonistic brother, Theo but the child was sent away from the magic realm to Tallahassee, FL and was adopted by a couple. However, 17-year-old Arielle Marquez has been suffering from amnesia while living with her adoptive parents in Tallahassee, FL. After attending Leon High School, She meets Ingrid Olson, Phoebe Webb, Summer Fitzgerald, and Naomi Palmer. When Arielle found the book of spells, the girls develop strange powers that goes along with their horoscopes. After being told that they are spellbinders, the girls must protect Tallahassee, FL from the forces of darkness while they uncover Xia's secrets that was connected to Arielle's past.
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.