Dan Foster, the engineer of the Black Diamond Express express train falls in love with Jeanne Harmon, whose snobbish, high society mother, Mrs. Harmon, does not approve of the blue-collar, rough-at-the-edges Dan Foster as a suitable husband for Jeanne.
as Dan Foster
as Jeanne Harmon
as Mrs. Harmon
as Martha Foster
as Fred Foster
as Train Engine Fireman
as Sheldon Truesdell
as Little Daniel (uncredited)