The film is about Casablanca, Morocco during WW II. This is the place where rich Europeans have fled to escape the war. Corrupt officials, crooks and dubious fortune-seekers try to profit from the refugee's desperate situations. German couriers get killed and Letters of Transit signed by General DeGaulle are for sale. An underground movement leader who had escaped from a concentration camp and had been chased through Europe by the Nazis wants to buy the two Letters of Transit on the black market for his wife and himself. He became a Freedom fighter who was about to be caught and left Paris…
