A young yakuza, Yatappe, wanders around the country in search of his long-lost little sister, Oito. While traveling, he rescues a young girl, Osayo, whose father entrusts her to him with his dying wish. To honor his promise to Osayo's deceased father, Yatappe brings her to safety, and from a distance keeps a watchful eye on her well being.

In the third installment of Yoshikawa's novel Musashi, things continue from the 2nd film at the end of battle, where Miyamoto continues on a mission of learning; with the introduction of his arch-rival Sasaki Kojiro; and lastly the large cast of characters rendezvouses for a fateful finale.

The remake of Yoshikawa's novel continues with the second installment in which Takezo, soon to be Miyamoto Musashi, emerges from the Himeji Castle after three years of intense contemplation and philosophical study and starting on his epic quest to complete his skill in the Way.

In the fourth installment, Musashi's potentially greatest opponent Kojiro jumps in and out of the story at the oddest and most coincidental moments. As his great love Otsu has succumbed to madness. Musashi then sets off to beat the functionaries of a treacherous clan in an arranged duel. 73 against one. Boastful Kojiro watches, secure in the knowledge that only he is a worthy opponent.

The fifth and final installment with the build up of the epic battle between Sasaki Kojiro and Miyamoto Musashi. With all the familiar characters making appearances: Otsu (Musashi's great love), Akemi, Matahachi (his former fellow soldier), old lady Osugi (still doggedly trying to defeat Musashi), and even the return of Priest Takuan (the man responsible for his journey towards enlightenment). But most of all, the boastful, long-haired and long-sworded Sasaki Kojiro.

In this tale of bravery and honor among the roving gamblers of old Japan, the heroic Jirocho, Boss of the Tokaido is called upon to help a young yakuza named Eijiro after he runs afoul of the new samurai officials who have taken over his hometown. Expertly portrayed by Kitaoji Kinya (son of the all-time great star Ichikawa Utaemon), this young man stands up for the townspeople and puts his life on the line. Jirocho, played by superstar Nakamura Kinnosuke, a boss known for his honor and valor soon finds himself involved in the feud which will only end in a brutal showdown.