A girl from a peaceful, Edo-era Japanese village seeks revenge for the death of a disgraced elder with the help of her sister and a lethal lady ninja nun. It's the time of the samurai and ninja, and Shogun Yoshimune rules Japan. Beneath the idyllic façade of the quant villages populating the countryside dwells a twisted sexual underbelly that affects the wealthy and impoverished alike. When one of the village elders commits seppuku after being raped, Kaede and her sister decide to take justice into their own hands and track down the perpetrator. Aided by a nun who believes in Old Testament-style retribution, the two sisters embark on a bloody mission of vengeance. Along the way, the three women slice and dice their way through lies and secrets while discovering that the story behind the rape is much more complex than any of them suspected.

It's been two years since Kasumi chose the Kunoichi lifestyle and she now has a new enemy in Hattori Hanzo. Hanzo's wish is to penetrate the Ueda castle. So he enlists his own Kunoichi to seduce the gatekeeper, probing him for security loopholes.

Saori, who was sentenced to death, has escaped from prison! Detectives Narita and Yamazaki are in pursuit of Saori. As Narita tries to handcuff her, she slashes his arm with a hatchet hidden on her back, then escapes again. As she continues on the run, Saori continues to commit murder. Where is she headed? And what is her true purpose...?