A British Army Officer Major Lawrence (Guy Rolfe) is on leave from being stationed in Germany just after WW2 when he sees a painting of a beautiful young girl in a London Art Gallery. While viewing the painting he is approached by an old man Professor Franz Menzel (Arnold Marlé), who escaped from Nazi Germany in the 1930's having to leave his family behind and who claims to be the young girl's father. Major Lawrence agrees with the old man to find the young girl when he returns to Germany. On returning to occupied Germany and after a long search Major Lawrence eventually tracks down the young girl but she is suffering from amnesia and living with a German couple who claim to be her parents. As Lawrence investigates, the circumstances of the young girl's past become more complicated.