Developers searching for a location to build a new resort are trapped in a subterranean WWII bunker, where they are confronted by an ancient evil.

Chapman is an ex-marine in Brazil's slums, battling the yakuza outfit who attacked his sister and left her for dead.

Nathan Algren is an American hired to instruct the Japanese army in the ways of modern warfare, which finds him learning to respect the samurai and the honorable principles that rule them. Pressed to destroy the samurai's way of life in the name of modernization and open trade, Algren decides to become an ultimate warrior himself and to fight for their right to exist.