The cryptozoological vortex is active again. Addeline, Fiona, and Ian return to visit Aunt Tabitha and Uncle Buster for the summer, along with Morgan and her cousin, Atticus. Then Tabitha disappears - believed to be stolen by a rogue dragon. Uncle Buster must stay behind to guard the vortex entrance to prevent the rift between the worlds from growing. The must kids cross over into the fairy realm on their own to search for Tabitha, fighting their deepest fears along the way. Will they find Tabitha before it's too late or will they be lost in the world of dragons, gypsies, and a misunderstood Minotaur?