Female European race car champion Betty Blake (Vale) decides to head to America for new challenges. Betty finds her fiercest rival in America is handsome driver Jim Flynn (Kent), who is attempting to design and build a new race car carburetor. Things are complicated by the efforts of an unkown villain who keeps attempting to sabotage Jim's invention, and the burgeoning romance between Jim and Betty. Veteran race-car driver of the day Barney Oldfield appears as himself in the film.
