The erotic martial arts movie LADY NINJA KASUMI - VOL.3: SECRET SKILLS takes place in Japan during the violent Sengoku period. The Kuroda clan is said to be in possession of a secret scroll that will give immeasurable powers to whoever can decode it. By using her feminine charms, Kasumi manages to steal the scroll, but she soon has to rebuff the Oni clan assassins who will stop at nothing to retrieve the parchment.