Unrepentant Tennessee moonshine runner Luke Doolin (Robert Mitchum) makes dangerous high-speed deliveries for his liquor-producing father, Vernon (Trevor Bardette), but won't let his younger brother Robin (James Mitchum) join the family business. Under pressure from both out-of-town gangster Kogan (Jacques Aubuchon), who wants a piece of the local action, and Treasury agent Barrett (Gene Barry), who wants to destroy the moonshine business, Luke fights for his fast-fading way of life.

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