Isazo is a traveling gambler and living legend in the world of yakuza, known for his swordsmanship and bravery, his impeccable manners, and his brilliant talent in gambling. One late fall at an inn in Kiso Fukushima, Isazo befriends a young boy whose mother turns out to be his old love Yoshino, with whom he was not unable to consummate a marriage due to the class differences between them.
During the raging war between the Toyotomi and Tokugawa clans, the swordsman Mohei (whose family has been completely decimated) is recruited by Toyotomi to overcome the seat of power, Osaka Castle. Mohei's daredevil skills will be put to severe tests.
Ronin Sasaki Kojiro pursues his ultimate goal of becoming a master swordsman. Along the way he encounters another great swordsman, Miyamoto Musashi.
