During the German Occupation of Greece, a brave Greek spy parachutes into a dangerous Nazi-infected zone. Without a second thought, Fotis, a young patriot, shelters him and decides to take part in the Resistance, even though the Germans comb the area to find the armed agent walking among them. Before long, Fotis flees to Athens to pick up where the spy left off and takes part in a daring plan right under the nose of the paranoid SS officer, Commander Carl Ashberg. Is there still hope for the crucial Operation Rainbow?