Fourteen-year-old Kate McGregor has trouble making friends. In exchange for her riding lessons, she works at Sandpiper Stables where the other girls look down their noses at her as she mucks stalls, cleans tack, and grooms their European warmbloods. For comfort, Kate turns to Black Magic, the barn's best horse. His favorite treat is watermelon rinds, which he slobbers all over her. But Kate doesn't care. She loves Magic's attention and pampers him...