Japan, late Edo period. A young samurai named Asami Nishimura is on a journey to save Japan from her former Clan and Daimyo. She is daughter of Kenichi Nishimura, a most trusted bodyguard to the current Daimyo of the Rusu clan. After troubles besiege their land at the hands of a Daimyo who has been chosen by the gods, Kenichi rebels against his lord and sends Asami away. Armed with a mysterious holy weapon Asami searches for a man named John Moses.