Jubei is wandering noble sword for hire, but when a chance meeting leads him to save young ninja woman from rape he makes enemies with a group of demonic humans. Jubei and the woman part ways, but later a government spy forces Jubei to join up with her again and investigate the mysterious death of an entire village. The investigation reveals a conspiracy involving the demons and a man from Jubei’s past who is supposed to be dead. As they get closer to the truth the demons close in on them and pretty soon Jubei finds himself in a deadly fight with many super strong inhuman opponents.