This is a remake version of the popular Japanese movie of 1963, "13 Assassins". The story is set in the 19th century when the shogunate’s tyrant brother, Naritsugu, was about to be promoted to Roju, members under the direct control of shogunate. To prevent the promotion, a team of selected Samurais led by Shinzaemon are ordered to assassinate him. However, Shinzaemon’s best friend and a rival Hambe is close to Naritsugu and tries to stop the plot. Their desperate fight begins.