An elder ronin samurai arrives at a feudal lord's home and requests an honorable place to commit suicide. But when the ronin inquires about a younger samurai who arrived before him things take an unexpected turn.
When an ancient statue is moved for display in Expo '70, a giant, vaguely Triceratops-like monster is released. The monster goes to Japan in pursuit of the statue and ends up battling Gamera, the giant flying turtle.
Zatoichi tries to unrest the mob rule over a small village all while the gang leader's bodyguard is actually the Yojimbo, secretly taking the gang down from the inside. Will the two heroes realize in time that they are on the same side?