Tired of being called useless, and tired of being unappreciated compared to her brother Solis, Luna decides that the Earth doesn't need a moon in the sky, so she takes on a human form. But after years of being among the human's she discovers that due to her disappearance an ancient race of monsters has emerged from hiding. She then takes it upon herself to hunt down all of these monsters, but after centuries of hunting, Luna starts to notice that she is being hunted as well. When an innocent family gets dragged into her one women war against the shadow monsters, she will risk everything to save them.
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.