Stagecoach boss Jeff Clark is shot while leading an assault on rival railroad workers. As he lays dying, he pleads for the two competing factions to stop their feud, turning over his share of Pioneer Stagecoach Lines to his daughter Susan. Stubborn stage driver Fuzzy Jones doesn't trust Clark's business partner and sends for Tom Cameron - The Lone Rider - to investigate. Susan's partner, conniving co-owner Harvey Kent, plans to kill the young woman and take over the stage line. After the murder scheme is foiled, Kent orders his thugs to dynamite the railroad construction site and frame Fuzzy for the crime.
Bob Livingston's best known cowboy role was Stony Burke, one third of the Three Mesquiteer trio in the 1930s. Though the characters (and the actors who portrayed them) rotated often during the Republic series' long reign, Livingston logged on more appearances (29) than anyone else. He is also well remembered for playing Zorro in The Bold Caballero (1936) and the Lone Ranger in the 1939 serial, The Lone Ranger Rides Again.