Moondance Alexander (2007)

Moondance (Kay Panabaker), a misfit at her school, anticipates another lonely summer. She unexpectedly finds an escaped horse named Checkers and returns him to his rightful owner, Dante (Don Johnson). Undeterred by Dante's gruff manner, she asks him for a job at the stable. While riding Checkers, she discovers he has a talent for jumping, and she convinces Dante to coach them for a prestigious competition.