City of Spells finds the world on the brink of war and four unlikely allies facing sacrifices they had never imagined. After the loss of Wesley and the horrifying reveal that Zekia is helping the Kingpin of her own free will, Tavia, Saxony, and Karam flee to Saxony's home to rebuild their rebellion. Meanwhile, trapped in the Kingpin's darkness, Wesley must fight against the deadly magic that invades his mind and find a way back to his friends before it's too late. As the Kingpin's dark magic spreads and his army conquers Creije, these four unlikely friends have to decide just how far they’ll go―and how much they are willing to sacrifice―to win.