At a house party given by Doris Parker, the daughter of a retired sea captain, Doris' friends congregate to receive mail from their "adopted" soldiers in France. When one of them suggests that Doris write to Harry Townsend, who has no family or friends outside of the army, she writes a note and he sends her a friend's photograph since he has none of himself. Harry's letters awaken a love in Doris which causes her to deny the ardent entreaties of Captain Jack Tims. After Harry is wounded and thinks he will die, his farewell note inspires Doris to visit. After Doris convinces Tims to take her aboard his transport ship against naval regulations, a submarine attack results in Tims' death and burial at sea. Finding Harry's face covered with bandages, Doris nurses him to health, and then discovers that he is not the soldier in her photograph, but she realizes she loved him because of his letters. After the armistice they marry.