A vicious plot that would change the course of Japanese history is set in motion when assassins conspire to kill Iemitsu, the third shogun of the Tokugawa dynasty. Things heats up as Iemitsu plans a journey across Japan where assassins lie in wait. Working with elder statesman Okubo Hikozaemon is Musashi Miyamoto who wants to unravel the mystery of who is behind this plot and things heat up further when some of them are the greatest swordsmen in the land!