College student Jimmy Shaw (Bruce Bennett) inherits a racehorse, Lightning Lad, and sells stock to fellow students to obtain funds for racing the horse. Lightning Lad wins every race in which he's entered. Marion Braddock (Toby Wing), a spoiled rich girl who owns a racing stable, offers to buy Lightning Lad, but Jimmy refuses to sell. The day of the big handicap-race arrives and Jimmy and his fellow stockholders are on their way to the track. But a group of gamblers, betting on Lightning Lad to lose, have some skulduggery plans to ensure that Lightning Lad does not win the race.