After getting involved in a saloon room brawl in Fort Lord, Dalton is arrested. His situation worsens when an unsympathetic judge sentences him to a year in jail unless he takes the alternative of signing up with the Plains Cavalry. Dalton reckons that anything will be better than breaking rocks, but when he joins Company H - known as Company Hell - he soon regrets his decision. The troopers are a motley collection of prisoners recruited...