When Victoria meets Moonshine, an ex-racehorse saved from the slaughterhouse and abuse, she despairs at having to ride such a difficult horse. The pair compete in dressage, a sport that tests the unity of horse and rider as they engage in what can only be called dancing. They compete against horses bred solely for the sport, always struggling to overcome the bias against horses like Moony. As she grows and comes of age, Victoria teaches Moonshine to trust, and Moony teaches Victoria the importance of heart and perseverance. Together, they master many trials and compete in the Junior Nationals in this inspiring and compelling true story of how a girl and her horse changed each other's lives forever.