In the midst of a war against the Heavens, a free-willed machine who had recently began to ponder its morality chooses to save a wounded Angel rather than kill it off. For this act, the machine was promised a "life worthier than that of man," and that it would be given immense power. Though, while the Angel was taking the machine up to the Heavens, it got gunned down by one of the mindless war machines. The machine was dropped into purgatory, all the way to the bottom of the mountain. To the Heavens, it was now considered a lost cause.
As it climbed from a steep pit at the bottom of the mountain, a deep frost began to cover the land as a last ditch effort to stop the machines from attacking. The fallen machine takes one last grasp at a thick tree root that was sticking out before completely freezing over.
There is only one thing left for this machine once it inevitably awakens. Climb the mountain of purgatory to reach the Heavens. That or simply die trying.
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.