Dale Carnak is down on his luck in Chicago. The only company taking on men the Pinkerton Detective Agency. Desperate for employment, Carnak agrees to infiltrate the Fraser Gang and take part in robbing a train of the silver bullion it is carrying. A series of misunderstandings sees Carnak become a fugitive - on the run with the rest of the gang for robbery and murder. But there is worse to come for Carnak, as the other bandits begin to suspect that their newest recruit is not who he claims to be...