As the Shogun lays dying, seventeen Iga clan ninja are sent to infiltrate the impenetrable fortress where his youngest son is preparing to storm Edo Castle and name himself Shogun by force of arms. They are to either steal the documents that will eventually give him lawful claim to rulership, or they are to assassinate him. But even before they reach the castle walls, they find their every move countered by a ruthless ninja hunter in the employ of the would-be usurper (Konoe), who not only knows their every tactic but knows the exact make-up of their team thanks to his own spies within Edo Castle. As the Iga Ninja fall one by one, the mission's success or complete failure--where failure will result in a bloody war of succession--comes to hinge on a single young and inexperienced ninja (Kotaro).
Kotaro Satomi
Jūshirō Konoe
Yuriko Mishima
Ryutaro Otomo
Chiyonosuke Azuma
Tokue Hanazawa
Kunio Kaga
Ryūji Shinagawa
Shunya Wazaki
Shinnosuke Ogata
Heitaro Gori
Hajime Nagoya
Ryōji Kōzuki
Masao Hori
Kōshirō Harada
Kinji Nakamura
Kusuo Abe
Kenji Kusumoto
Kōtarō Nirei
Minken Karasawa
Yoshiki Oyamada
Kazutarō Kuni
Kenji Susukida