A story of Yagyu Jubei, master swordsman from the well-known Yagyu-Shinkage school in the Edo period. Even decades after the establishment of the Tokugawa shogunate, many were framing plots to topple Tokugawa's political system. The master of Yagyu-Shinkage school, Yagyu Munemori who serves the third Tokugawa shogun Iemitsu is commissioned to keep an eye on Daimyo lords all around Japan. Munemori's eldest son, Jubei starts a stealthy trip to fight against those who engage in secret maneuvers. Enjoy sword fighting actions between Jubei and his rivals..