Summer, 1944. Yugoslavia is locked in a war within a war. In addition to fighting the German occupation, warring factions battle each other. Hundreds of Allied airmen have been shot down over this volatile region. With three failed air missions, Lieutenant Drew Carlton is desperate for redemption. He volunteers for a dangerous assignmentin Yugoslavia's green hills. This daring plan - to evacuate hundreds of stranded airmen while avoiding detection by the Germans - faces overwhelming odds. What follows is an elaborate rescue that required astonishing courage, sacrifice, and resilience.