A race-car driver tries to keep his kid brother from taking to the track.

World champion race car driver Joe Greer is determined to see his kid brother Eddie finish college, but Eddie wants to follow in his brother's footsteps and join the racing circuit. Eddie finally wins his brother's consent to take to the race track if he promises to study at night, but problems between the two erupt when Eddie becomes enamoured with Frankie Merrick. Convinced that Frankie is a gold digger, Joe tries to break up Eddie's romance, and on the night before the big race, the brothers argue about her. As a result, Eddie signs up to drive a rival car in the race. Angered, Joe decides to teach his brother a lesson by driving him off the track. During the competition, Joe's best friend, Spud Connors, tries to separate the brothers' cars but dies when his car crashes and bursts into flames. Guilt-stricken, Joe gives Spud's wife all his savings, leaves town and sinks into oblivion, terrified of ever returning to the track. Meanwhile, Eddie marries Frankie, ascends to the championship by winning race after race, and works on new inventions for racing car manufacturer Duncan Martin. Having reached his nadir, Joe hitchhikes to the racetrack to watch his brother compete in the Indianapolis classic. While in the lead, Eddie is injured. Joe immediately springs from the stands, hops into his brother's car and drives it to victory, thus conquering his fear of racing. At the finish line, the brothers reconcile, and Joe proposes to his sweetheart, Lee Mason, and accepts a job at Martin's car company.