Isla and her pony, Diablo, are preparing for a big showjumping competition, where Isla hopes to qualify for the Regionals. But one day things dont go to plan, and Isla hurts herself. When Isla is fit and well she is nervous about riding again. Her teenage friends, Gemma and Millie, come to the rescue with Islas friend Tilly, to help the talented showjumper enjoy riding Diablo again.