Bonnie and Sam are best friends. No one loves horses the way they do. When Bonnie whispers to them, they understand, and Sam always knows if they need a drink, or a hug, or a race around the paddock. The girls ride together whenever they can - despite not having any of their own, they have a special relationship with all the horses and ponies in town and have the best adventures. Wanting to enter the local talent night with some trick riding, they find that animals aren't allowed. But then the circus comes to town and they learn what trick riding is all about.