The story behind the infamous Dalton Gang and the truth behind the riskiest bank robbery of the Old West. Determined to leave their mark on history, the Dalton gang attempts to rob two banks simultaneously. With a relatively seamless plan, the gang is confident they can successfully pull off both jobs at one time. But, unfortunately, things soon go awry when the town recognizes them and fights back against the gang. But rather than walking away with the cash, their heist takes a deadly turn, and only one of the gang members lives to tell the tale.