County Fair (1937)

A jockey is unjustly accused of drugging his horse at the county fair, having been framed by a jealous rival. He leaves town with a friend, and tries to make a new start. As they are traveling, they discover a very fast horse which is owned by a brother and sister who live on a farm, and they all decide to enter the horse in a race. But the father of the two young persons refuses to allow the horse to be used for anything except farm work.