Zenith finds herself on death row after some advanced science gets her accused of witchcraft. But minutes before her execution she is saved by 3 real witches, who are under the impression she is also a witch. After Zenith is taken to safety she explains to the witches that she is not one of them, but offers to repay them for saving her life. Turns out the witches have a job for her. A while back the government stole the artifact needed for creating new witches. The witches want it back. The problem is that the artifact is protected by a deceive that senses and repels magic, meaning no witch can retrieve the artifact. The witches want Zenith to steal back the artifact. In repayment for her debt, Zenith agrees. Danger, science and magic ensue.
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.