A Japanese geologist discovers that dinosaurs still exist in caves beneath the surface of a volcanic lake.
Townsend Harris is sent by President Pierce to Japan to serve as the first U.S. Consul-General to that country. Harris discovers enormous hostility to foreigners, as well as the love of a young geisha.
In a futuristic version of medieval Japan, a band of swordsmen battles an evil warlord and his mechanical army of ninjas, and are aided by a mysterious heroic cyborg ninja, Shiranui.
