Fuma Village is burned to the ground by Tokugawa retainer Doi Katsutoshi, who harbors a deep grudge against the Fuma clan. To put an end to the relentless slaughter, Juzo—the last surviving Fūma ninja—finally unleashes a forbidden secret technique. Standing in his way are the ninja of Iga, Koga, and Sanada. And to make matters worse, a formidable master of the Yagyu Shinkage-ryu also appears…