Hayseed farmhand Jerry O'Connor (Dennis O'Keefe) dreams of breaking into the high-speed leagues of professional auto racing but has little hopes of doing so, even with the help of Buddy (Nat Pendleton), his dimwitted pal who's a savant in auto repair. When a racer totals his flivver in front of the pair, they save the car from the scrapyard and hit the amateur circuit. While satisfying his appetite for speed, Jerry becomes smitten with Jane Delano (Cecilia Parker), daughter of racing magnate Pinky Delano (Harry Carey). Pinky is impressed with Jerry's skills, much to the chagrin of Jane, and invites him to join the team. Pinky has a problem, though -- fatal accidents inexplicably plague the drivers of a certain car design. It's a race against the clock and fate as Jerry tries to stay alive behind the wheel while Buddy tries to crack the case of the deadly car.