After surviving an attack from the rival Kouga clan, Ittoki Sakuraba, an ordinary boy, discovers that he is the 19th heir of the Iga ninja....
After surviving an attack from the rival Kouga clan, Ittoki Sakuraba, an ordinary boy, discovers that he is the 19th heir of the Iga ninja. Ittoki learns to become an Iga clan ninja and joins the war between the Iga and Kouga clans.