Colonel Boom has valuable fortification plans locked in his desk. Two spies are trying to lay hands on the papers. The spies overhear Fay, Boom's stenographer, rejoicing in the fact that the millionaire aunt has just died, leaving her a fortune, and that now she is free to give up her job and marry Ed, the bookkeeper. Lieutenant Schnide, one of the conspirators, determines to win the heiress for himself. He puts over a game on Ed, which causes Fay to break their engagement. Then he and his pal go after the plans. They are discovered, however, by Bobby, the office boy, who notifies Colonel Boom. The villains are arrested. Fay learns of Schnide's perfidy, and she and Ed are reconciled.
—Moving Picture World synopsis