After the Nazi invasion of France, an American civilian found himself allied with the French forces, surviving a gunshot wound. But his injuries led to amnesia, and he couldn't remember his true name or country of origin. In the Battle of Dunkirk, he dons a costume and fought the Nazis along side the British and French as "The Unknown." Refusing an offer to return to England, the Unknown remains in Europe to fight the Nazis head-on. As he put it, "I have forgotten much....but I will never forget cruelty and injustice!"