RL 3. May Grover is sick and tired of being treated like a little kid. Her two older sisters, Ellie and Dottie, tease her all the time, especially about being pony-crazy. When May is chosen to lead the Pony Parade at Pine Hollow Stables, she decides to prove to Ellie and Dottie that she's a serious rider. What May doesn't know is that her sisters have a surprise of their own in store!