Gloha, the offspring of a chance mating between a goblin and a harpy, is the only creature of her kind in the wide, wonderful Land of Xanth. Accompanied by Cynthia the Centauress, Amanda the Griffon-girl, Graeboe the Invisible giant, and Trent the Magician, Gloha must face many dangers on a perilous quest for truth, friendship, and happiness.