Fifteen-year-old Kellea Sullivan discovers her calling in life after falling in love with a Thoroughbred colt she names Wind-Free. She cares for the colt after his leg is caught in a coil trap, and then after surgery for a bone spur. Her love and attention is rewarded when Wind-Free begins racing and wins race after race. But can he live up to his name and reputation when he's entered in the biggest race of all, the Triple Crown?