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As nefarious warlord Oda Nobunga continues his quest to conquer all of Japan, a powerful young ninja becomes ensnared in a plot to kill the powerful ruler in this period adventure that helped to launch the ninja craze when originally released back in 1962. Ishikawa Goemon (Ichikawa Raizo) has lost his honor, and now in order to reclaim it he must do away with the most feared man in all of Japan. But the task won't be an easy one, because death lurks around every corner as enemy ninja gangs fast close in. In order to ensure the authenticity of their ambitious martial arts feature, the producers of Shinobi No Mono enlisted the so-called "last living ninja" as an expert consultant.