In Belgium, at the outbreak of the war, Russian agent Olga Raminoff shoots at a German general when the enemy enters town. Ray Bourke, an American traveler, gives her the protection of his name, but nevertheless both are sentenced to death. They are rescued by an allied rescue plane and later, bound for home, Ray meets an old college friend, Curt Schreiber, who is in the service of the German government. Schreiber has important papers to be delivered to Washington and, knowing that he will be searched on board ship, gives them to Ray. Olga beseeches Ray to give the papers up for her sake, but his word to Schreiber is sacred. Nearing America, Ray tells her that he will make an effort to return the papers if she will marry him. Once married, they settle on his estate, where Schreiber comes to visit one day. Leaving suddenly with a borrowed suitcase, Schreiber opens the bag and discovers his papers. Thus, the German is able to retrieve his papers without Ray breaking his promise to Olga.