Frieda is a German woman who helps English airman Robert 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, the attractive widow of Robert's brother, and Aunt Eleanor, a figure in local politics and vehemently anti-German. At first, the townspeople are bitterly hostile to Frieda, and Robert is forced to give up his job as a schoolteacher. Gradually, however, the ill will subsides, and she is accepted, except by Eleanor. Frieda is befriended by Judy, who, unknown to Robert, is now also in love with him. As Robert settles into a new life, working with Frieda on a farm, he begins to lose his prisoner-of-war heaviness. He sees Frieda in a new light. But then they see a film dealing with the horror of Bergen-Belsen and Frieda fears their marriage will not survive its revelation of her countrymen's cruelty. But Robert clings on to what they have established between them. Suddenly, an ex-German soldier appears—Frieda's brother Richard. Thinking he had been killed, Frieda is initially overjoyed. He had been captured and allowed to volunteer for the Polish Army. However, she soon realises that he has remained a Nazi at heart, his wedding present to Frieda being a swastika on a chain. In a pub, he is denounced as one of the guards at a concentration camp. To Robert, in private, he admits the truth of this accusation, and claims that Frieda had known and approved of his actions. They fight, and Robert now revolts against everything German as vile and polluted. Frieda, fearing that she has lost Robert, attempts suicide, but, just in time, Robert reaches her and the shock brings him to a realisation of what he risked losing. He perceives that his faith in her was justified. Even Aunt Eleanor comes to believe that her sweeping anti-German prejudice was wrong: "You cannot treat human beings as though they were less than human—without becoming less than human yourself."
The film was the ninth most popular movie at the British box office in 1947. According to Kinematograph Weekly the 'biggest winner' at the box office in 1947 Britain was The Courtneys of Curzon Street, with "runners up" being The Jolson Story, Great Expectations, Odd Man Out, Frieda, Holiday Camp and Duel in the Sun. The film was released in 1948 in the United States to excellent box office results.
