A cynical samurai is left as the sole survivor to fulfill a plot to assassinate the puppet of a villain intent on usurping the shogunate in the 17th century. A Shogunate Elder connives to rule Japan by making his puppet, the Shogun's brother Tsunashige, the next Shogun. The best strategist in Japan, Yamaga, leads a plot to stop the Elder, but his cabal is betrayed and most of the conspirators are captured and tortured.
| Writing | Kaneo Ikegami | Writer |
| Writing | Norimichi Matsudaira | Idea |
| Directing | Eiichi Kudo | Director |
| Editing | Kozo Horiike | Editor |
| Art | Jiro Tomita | Production Design |
| Directing | Tatsuo Honda | Assistant Director |
| Sound | Seiichi Suzuki | Original Music Composer |
| Camera | Osamu Furuya | Director of Photography |
