Three generations of "Kage" ninja in the employ of Mitsunari Ishida, and the mysterious events that unfold around the Kanei Gozen match held in front of Shogun Iemitsu with Munenori Yagyu and Tadatsune Ono as referees. What exactly are the mother and son "shadows" up to?

11 years have passed since the clash at Sekigahara and the power of the country is divided up between the Tokugawa family and Toyotomi family. Sanada Yukimura, a lord under the Tokugawa family, is one of the few people that senses a war will start in the next few years and that the Tokugawa side will lose. Unwilling to keep siding with the losing side, Yukimura decides that the time to prepare for the upcoming war is now and tasks his most trusted agent, Sarutobi Sasuke, with an important mission. Sasuke must assemble 10 of the strongest warriors of the country to create an elite team against the war with Tokugawa that will decide the fate of the country.