Helen's cleverness exposes a band of counterfeiters who later succeed in turning the tables on the railroad detectives and tying the two men to the cowcatcher of a train which they then start off down the grade. Helen pursues the train on a motorcycle and boards it by a leap to the handrail of a freight. The engine is soon brought to a stop and the detectives released. Helen also lends her assistance later to the capture of the counterfeiters.