In the latest action-packed installment of this New York Times bestselling series, Drake and Worm encounter a mysterious Ghost Dragon!

Zoltan, an evil wizard, has stolen a Dream Orb! With the orb, Zoltan has access to the Dream World -- a place that is forbidden to all wizards. Drake and Bo travel to Zoltan's castle in Gothica to stop him. There, they meet Dragon Master Sandor and his Ghost Dragon Phantom. Is Phantom a ghost or a dragon? Can Drake and Bo find the orb and stop Zoltan before he opens the Dream Gate?