Two coachmen and five passengers of a wagon and stagecoach become separated from their wagon train on the way to California in the early 1870s. The group includes wagonmaster Mr. Callahan and his shotgun lookout Dusty, Mr. and Mrs. Brookhaven (a wealthy Eastern banker and his wife), a book smart civil engineer named Andy, dance-hall girl Lulu McQueen, and farm girl Betsy. The show follows their adventures while they attempt to return to their wagon train. According to the theme song, "...Dusty's the reason for their plight, thanks to Dusty – nothing's right".
