A group of four young boys figure in episodic wartime scenes, with George Prentiss taking the lead in this installment. The narrative follows their movement through occupied ports and inns, secret errands, and the military preparations around New York, proceeds through the fighting on Long Island and hazardous missions behind enemy lines, and culminates in the river crossing and the capture of enemy troops at Trenton. Alongside troop maneuvers and skirmishes, the account highlights civilian courage, clandestine warnings, and encounters with senior commanders that shape the boys' wartime experience.