On the occasion of the funerals of his grandmother’s Matsuno, Saeki Kentaro learns that his natural grandfather is actually dead. Together with his sister, Keiko wants to learn more about the ancestor or Miyabe, Kyuzo. It seems that the latter was the pilot of the fighter within the Japanese army, during World War II. Kentaro gives the result of a war which was caarad describes his grandfather as a coward, a disgrace for the army, a man who thought just how to save his own life, avoiding the enemy by all means. As it meets other warriors who met his grandfather, Kentaro realizes the true motivations of his grandfather.