Jimmie, a Boy Scout, famed as a stalker and a path finder, longed for exciting work, and when somebody whispered "spy" to him, he followed the trail of a college professor, tramping through Westchester County, New York, seeking strange insects. With rare cunning Jimmie shadows and trails the "suspect," often crawling on the ground after the approved fashion of Secret Service men. The explosion comes when Jimmie seeks to arrest the professor. Another day, however, Jimmie arrests a stranger whom he found making maps of the roads; guarding his prisoner, he takes him before a magistrate, but the latter sets the prisoner free and warns Jimmie to be more prudent. The former prisoner quickly disappeared and two hours after it is learned that he was a real spy. Jimmie's grief is finally transformed into happiness when he has an opportunity to assist the Secret Service man in capturing the spy for the second time.
—Moving Picture World, August 11, 1917