Elen is a princess of the kingdom of Ymbria. Her greatest wish is to become a rider of worldrunners: the magical horses that are the only safe way to travel the roads through the worlds of Faerie. Now Elen has the chance to fulfill her dream at last, but the price is much too high. To become a worldrider, Elen must journey to the House of the Star on Earth, the Arizona ranch where the worldrunners live and breed. There, she must try to forge a peace...