Every night for past 17 years - AKA, her whole life -, Piper Andrews has always dreamt of the exact same thing: a bustling metropolis in the sky, suspended upon floating mountain peaks, and awake only at night. There she runs and hides each evening, living out her second life under alter ego Zira Ferne. There, she can be herself and the live the life she wants to lead.
But when she starts writing about the city - the Constellation City -, she comes to realise that the place of dreams isn't as magnificent as it once seemed, nor was it created by her, nor is it happy to have her there.
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.