Haruka, a young girl in ancient Japan, is not like everyone else. She would rather be playing with her best mate Kichirou or helping her brother in the field. But her strict father won't allow it. One day, Haruka is told she is to marry Kichirou. So the both of them decide to run away from their village to make something of themselves, to prove to their parents that they can amount to something. Along the way, they run into to trouble, but they are both excellent at martial arts, and are picked up by a sensei at his ninjutsu dojo, where they train in the way of the ninja...