There's no hope for Sierra . . .

Every trainer at Whitebrook Farm has given up on Sierra. The spirited colt just doesn't seem to have the patience for racing. Then Sierra jumps effortlessly over an enormous fallen tree, and Samantha McLean, the head trainer's daughter, knows the horse could be a champion steeplechaser.

With her friend Tor's help, Samantha begins to train Sierra for the dangerous demands of steeplechasing. But when Sierra's finally ready for his first race, Tor, the Thoroughbred's jockey, falls and breaks his arm. Now Samantha must ride Sierra in the most perilous race of her life--and make Sierra a winner!