Fuu is a part-time teahouse worker whose life changes forever when two vagabond warriors, Mugen and Jin, stumble into her place of business and end up in hot water with the local magistrate.

An unknown artist hires Fuu for a private modeling session, but his passion for painting turns out to be a front for a human trafficking ring. Will Mugen crack the case in time to save Fuu from a life of slavery?

Jin, Mugen, and Fuu fall into the clutches of a hoard of rotting zombie treasure hunters. Next, they get blown to oblivion by an asteroid. Or maybe they just ate some bad mushrooms.

Jin enters a bloody grudge match with the man responsible for the ruin of his rep. Meanwhile, Mugen races to save Fuu from the clutches of a sadistic madman bent on bloodshed.

Old scores are finally settled as Mugen, Jin, and Fuu finally come face to face with the ghosts of their respective pasts.