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?