Frieda (Mai Zetterling) is a German woman who helps English airman Robert (David Farrar (actor)) to escape from a German prisoner-of-war camp as the Second World War nears its end. She loves him; he is only grateful to her. In a church between the Russian-German lines, however, Robert marries her, so that she can obtain a British passport. Together they eventually arrive in his Oxfordshire home. Frieda meets his family: his mother, his small stepbrother Tony, Judy (Glynis Johns), the attractive widow of Robert's brother, and Aunt Eleanor (Flora Robson), a figure in local politics and vehemently anti-German.