Japan, 1944. Trained for intelligence work, Hiroo Onoda, 22 years old, discovers a philosophy contrary to the official line: no suicide; stay alive whatever happens; the mission is more important than anything else. Sent to Lubang, a small island in the Philippines where the Americans are about to land, this role will be to wage a guerrilla war until the return of the Japanese troops. The Empire will surrender soon after; Onoda, 10,000 days later.
Yusuke Kafuku, a stage actor and director, still unable, after two years, to cope with the loss of his beloved wife, accepts to direct Uncle Vanya at a theater festival in Hiroshima. There he meets Misaki, an introverted young woman, appointed to drive his car. In between rides, secrets from the past and heartfelt confessions will be unveiled.