"No one thought Wonder's Star would get well again. Everyone was certain he would never run another race. The racing press was calling him a has-been. But Christina Resse never gave up hope...".
Champion jockey Ashleigh Griffen delves into her past, when she raced Wonder in the Triple Crown, to help her daughter, Christina, overcome her insecurities about racing.
Wonder's Champion has the potential to be the fastest colt ever to be trained at Whitebrook, but although his running is almost perfect, Cindy despairs of ever teaching the horse enough discipline to compete.
Ashleigh Griffen's horse, Wonder, gets a new trainer, who is very harsh and says that Wonder is untrainable, and Ashleigh worries and contemplates giving up on Wonder when he begins to behave erratically.
Samantha McLean is overjoyed when she is given a pony named Shining, even though the filly is stubborn and sickly, but she is forced to make a difficult decision about the future ownership of Shining when a little handicapped girl named Mandy falls in love with the horse.
When Wonder's Pride wins the Kentucky Derby, his owner wants to enter him in the Triple Crown, but his jockey Ashleigh and her friend Samantha are worried that the beautiful horse will be raced to death.
After her mother's death in a riding accident, Samantha's father forbade her to ride. But when an opportunity arises for her to train and ride a young filly, she must convince her father to let her ride again.