Eron Smauldings, born into a destitute working-class family in the fantastical city of "Ineven," has known only a modest life in the quiet steampunk-style town of Adoris. However, chaos now engulfs even the once peaceful Ineven as the Unions of Workers and Soldiers (UWSers) rise against the weak and corrupt President-King-Lord, Dubin Duprenne, in the country of Frei'Koi'. Fearing conscription into the army, Eron and his loyal friend, Oaker Dennisen, are compelled to leave the city.
Their journey takes them from Ineven to Kassock and Kasserkeltch, where fate deals them a sinister hand. They find themselves unexpectedly framed as the suspected killers of a prominent political family, entangling them in a treacherous web of betrayal, backstabbing, and a second murder. Power struggles abound, forcing Eron and Oaker to confront their inner demons, as their very friendship and bond are tested.
Amidst the turmoil, Eron and Oaker must make a harrowing choice: to embrace the darkness within and fight for what they hold dear, or forsake everything in a desperate bid for freedom. Will they emerge from this tumultuous journey unscathed, or forever be haunted by the thirteenth time?
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.