In the eighth of November 1942, Winston Churchill and his double are passengers aboard a British airplane destined for Casablanca but it is intercepted by German bombers and forced to land in Algiers. A special train known as the Casablanca Express is hastily prepared to transport them overland to Casablanca. The Nazis discover the plan, and the train is captured in a daring commando raid. While Churchill makes it safely through to Casablanca, his double remains aboard the train as a decoy. The Allies prepare a counter move and entrust Captain Al Cooper with the difficult task of freeing the man whom the Nazis believe to be the real Prime Minister. Although the operation costs the lives of many men, the suspicions of the German Command must not be aroused...the Allied plan must be carried out to the end!