Sweepstakes plot
"WHIRLWIND MELODRAMA Every Variety of Thrill!"
Bud Doyle is a jockey who has discovered a secret to improve the performance of his favorite horse, Six-Shooter. As soon as he utters the phrase "Whoop-to-doo", the horse responds with a burst of speed. As the special bond between Bud and his mount grows, so does the tension between Bud and the horse's owner, Pop Blake. They are still arguing about his relationship with the local singer Babe Ellis. Blake sees Ellis as a distraction ahead of the upcoming big race, the Camden Stakes.