When the mysterious woman in the room next door disappears, a debonair 70-year-old ex-spy living in a luxury hotel on the Côte d'Azur is confronted by the demons and darlings of a lurid past in which moviemaking, memories and madness collide.
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.