Cube Route
Piers Anthony
 In the magical land of Xanth, wishes are far more than mere words. So when a Plain Jane called Cube whispers a wistful wish to be beautiful, she finds herself leading a company of colorful companions on a search for the mysterious Cube Route--a perilous path that leads to danger, adventure, and perhaps her heart's desire as well. This curious quest takes them all over Xanth, into the mythical realm of Phaze, and even to our own world, where Cube rescues a beautiful human woman from a very ugly situation, ending at last in a mysterious Counter-Xanth where things can be transformed into their opposites in the wink of an eye.