With a number of crew members injured, and the aircraft damaged and leaking fuel, the crew realize that they no longer have enough fuel to return safely to the United States. They set down at Anadyr, a little-used Russian airfield to steal enough fuel for their journey home. Surprised in the act of refueling by Soviet forces, one of the crew sacrifices himself to allow the plane to take off. Despite considerable damage to both crew and aircraft and a final attack by a Soviet fighter, the "Old Dog" is able to make it home safely.