Four days after the second atomic bomb was dropped on Nagasaki, American airmen are flying the last and longest bombing mission of the war. In Tokyo, a fanatical group of Japanese officers stage a daring coup d'etat in an effort to prolong the war. As the rebels take over Japan's Imperial Palace, and with it - Emperor Hirohito; radio operator Jim Smith and the men of the 315th Bomb Wing are facing their own dangers in the sky above Japan. In a development not anticipated by generals or world leaders - the Last Mission and the coup d'etat converge, helping to bring an end to the most destructive war the world has ever known.