Following a protracted period of effort, Luz and her companions embark on a bold undertaking: a return journey to the Demon Realm.

With urgency, Luz and her companions strive to outpace Belos, their ultimate goal to reach the Collector and safeguard the Boiling Isles.

The destiny of the Boiling Isles now hinges upon the unlikely alliance of a human, a witch burdened by a curse, and a diminutive king.