After Alliance bombings, Planet Swooning Moon is in ruins. Only the megalopolis Capitol survived under its blue dome. A harsh world awaits in the wilderness: among thousands of broken-down amusement parks, dragon poachers raid the air, while gangs of youth, 'wing walkers', pace the marshlands looking for magical items to sell for a few coins.
Eighteen-year-old Cassie just joined the scavengers. She's heartbroken after losing her best friend in a tragic accident. But everybody knows dragons can alter reality. All she needs is a sage dragon's magic...Right?
More used to dragon-singing at her parents' opera house, she doesn't exactly know how to fit in, but she finds an ally in Jay Tachebana, rascal son of the most affluent mobster, who flies around in samurai attire in his father's billion-dollar racer craft hunting dragons.
When Cassie and Jay venture deep into uncharted grounds, they discover there's a good reason why Swooning Moon is encased in guarding spells...and underneath, something dark is awakening.
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.