December 2002, Japan is always rule by a shôgun and the samurais are still here. The country is again in autarky and doesn't have any technological evolution.

At this moment, a big black boat, like Commodore Perry's boats, enter inthe Bay of Tokyo. On this boat, Seven, a man come from hell to destroy Japan. But the samurais want to defend their country. At their head, Zanjûrô, a young warrior with a big heart.

An merciless battle for the Empire restauration begins...