Gordon Harvey, a wealthy American, enlists in the American Legion of the Canadian Army to fight with the Allies even before his own country has entered World War I. He woos and weds Betty Milburn, and then, because the young bride cannot bear to be parted from her new husband, she disguises herself as a Red Cross nurse and accompanies him to France. Ralph Perry, a spurned suitor, reveals her presence to the authorities, knowing that the young couple will be sentenced to death for breaking military rules. Rather than send Betty to the firing squad, Gordon shoots her and then embarks on a suicidal combat mission. He is saved by Perry, however, and awarded a Victoria Cross for heroism. Betty, only wounded by the shot, recovers and is reunited with her husband.