Shintaro is more of an obstacle than Genkuro expected, so he seeks the help of Dogan, the master of the Iga ninja.

To persuade Dogan, Genkuro decides to kill Dogans grandson Suiki and frame Shintaro.

For good measure Genkuro also seeks the aid of Shintaros old foe the Koga Ninja.

Will Genkuro fulfil the plans of the Owari family? Or can Shintaro, Tonbei and their odd band of allies take Japan away from the abyss?.