Captain Henri Rochard of the French army, and Lieutenant Catherine Gates, of the American, are assigned a mission together to stop a high-level German scientist in postwar Germany. They start out thinking they hate each other, but end up falling in love. They encounter various bureaucratic hassles trying to get married. When Catherine's army unit gets recalled to the United States, the only way they have to stay together is by invoking a law allowing the spouse of American army personnel to enter the country - the War Brides act.—John Oswalt