It's unusual to describe musicians as “itinerant,” but "Jigger" (Richard Whorf) and his new group are practicing inside a railroad car while traveling across the nation between performances. During their journey, they come across “Del” (Lloyd Nolan), who, after an awkward beginning involving alcohol, food, and a firearm, becomes one of them. He informs them about a bar where they can secure a regular engagement, whic…