The kids set up a concession stand across the street from the local racetrack. Befriending Mary Kornman, the daughter of a wealthy horse-owner, the youngsters gain 　　free access to the track, and thrill to the sight of a race in progress. Thus inspired, the kids set up their own track and stage their own "champeenship" race, with 　　the youthful jockeys astride such beasts of burden...