After the epic battle of The Balloon Thief, Khadija, Jacob and Darian are heroes. But then Khadija learns that her sister, Talia, has been kidnapped and taken to the jinn realm of Al-Ghaib.

Khadija and Darian go to her rescue. But Darian is strangely changed since the battle that cost him his heart. Khadija will need all her wits about her if she's to outfox her sister's captor - and perhaps, save the boy she loves . . .