As Samantha and her friends prepare for a charity horse race, they're very excited. Sam is riding Ace, and her race partner, Jake, plans to train a pinto filly running free on reservation lands. But the wild pinto has other plans. When the filly escapes and runs off with the Phantom, Sam is torn. If she helps Jake, she's taking the filly away from the Phantom. Will she betray her friend or her wild horse?