When the United States enters World War I, a mother sends her two eldest sons off to the battlefields with a smile, although her heart is breaking. She soon learns that the eldest is missing and the second son is wounded, however, and resolves to keep her youngest at home. The boy, due to the influence of pacifist literature, willingly accompanies his mother on a secret journey to their seaside home, but the father, ashamed that his son is a "slacker," discovers their whereabouts. The three are in the midst of a heated argument when the pitiful survivors of a ship destroyed offshore by a German U-boat come to the house seeking refuge. The mother and son realize the importance of the cause and the son enlists. At Christmas, all three sons come home, the eldest accompanied by his new French bride.