Ittoki has suudenly been urged to be come a ninja. After a talk with Tokisada, a ninja feared as the "Demi-god," Ittoki reluctantly agrees. But to get inito the Ninja Academy, Ittoki has to pass the transfer admission exam.

The practical exam is coming up. Since there are fatalities every year, Koga intends to use it as an opportunity to kill Ittoki. Ittoki questions world of ninjas. In preparation for a showdown with Suzaku, Kousetsu and Ittoki form a plan...

Yumika's death sentence brings turmoil to Iga. As Acting Chief, Ittoki's leadership is tested, but he is still in shock over his mother's imprisonment. Meanwhie, in Koga, something fearsome is beginning to move.

Ittoki decides to give the secret Ninja Core to Kidou. The Iga ninjas oppose it as a declaration of defeat. Kirei, Ryoko, and Suzaku find new resolve. Meanwhile, Iga's traitor is making moves.