The beautiful daughter of a merchant with a penchant for danger proves to be too much to handle for her worried father. Disguising herself as a man and changing her name, she heads for the capital...

Two groups are after the legendary Yagyu Secret Scrolls. A princess of a disgraced clan and her loyal servant want it to clear their family's name. And a rival clan wants it to destroy the Yagyu family. Only master swordsman, Yagyu Jubei stands in their way. What is the secret that is hidden away in the scrolls?