Young RainbowDash goes to live with her Aunt. She finds a track nearby and wants to race, but can't. Already getting bullied in school, her Aunt Stormy is enemies with the owner of the track. She tells RainbowDash to stay away from the track and the owner's son Soarin. Rainbow is determined to show her Aunt she can race and end the rivalry between her old foe.

P.S. People have been asking - They are ponies in this story. Not humans.