The year is 1614 AD.Two warring ninja clans, each supporting a son of Hidetada Tokugawa as the next shogun, send ten representatives each to fight to the death for the possession of a scroll.

• 江户时代，取得天下的德川家康令甲贺、伊贺两大忍术宗家相争，进行10人对10人的忍术杀戮战，最后的胜利者将决定由谁来担任第三代将军，以解决德川家族的继承问题。