In 1946 Lisa Held, a survivor of the concentration camp at Auschwitz, falls into the hands of ex-Nazi Thorens, who promises to smuggle her into Palestine; actually he is a white slaver who plans to ship her to South America. She is saved when Dutch policeman Peter Jongman, who is plagued by his failure to save his fiancée from death at the hands of the Nazis, accidentally kills Thorens. Jongman then decides to atone for the past by seeing that Lisa reaches Palestine. He gets them both work on a Dutch barge owned by Captain Brandt, who takes them to Tangiers. There, a flamboyant smuggler, Van der Pink, arranges passage for them to Palestine. During Lisa's medical examination, Peter discovers that the Nazis had used her for surgical experimentation, a series of operations which have made her incapable of being a wife or mother. Peter also learns that he is wanted back in London for questioning about the death of Thorens. Since he knows the British are planning to block Lisa's illegal entry into Palestine, he makes a deal with one of their agents: if Lisa is allowed to enter the country, he will surrender himself to the British police. Once he has accomplished his mission and Lisa is delivered into the hands of the Haganah, Peter leaves to keep his rendezvous with the British authorities.