Ashleigh's parents have bought her a racehorse which means Edgardale Farm has a shot at winning the Kentucky Derby. Royal Renegade wins his first race, but then something goes wrong and the horse turns mean and starts to lose races. Can Ashleigh solve the mystery before the Derby?

It's almost Thanksgiving, but Ashleigh Griffen isn't feeling very thankful. Her favorite filly, Shadow, has just been sold. And her best friend, Mona Gardener, is moving far away. Ashleigh is tired of saying good-bye. She's so upst that when a needy mare with a late-due foal arrives at the farm, Ashleigh refuses to get attached - even when her neglect almost costs the mare her life! Is the new Ashleigh here to stay? Or will a holiday miracle bring...

Forbidden to ride after her mother's death in a riding accident, thirteen-year-old Lily nurses her mother's beloved horse, Astra, back to health, hoping that someday Astra will win the Tevis Cup endurance race.