In the middle of the 12th century, the Heiji Rebellion broke out in Japan. The two major families of Hei and Minamoto wrestled with each other, and eventually the Minamoto family was defeated, and Minamoto Yoshitomo (played by Masaya Kato) was also killed by the rebels. After that, Yoshitomo's beloved wife Tokiwa (played by Izumi Inamori) and two children Yoritomo (played by Sosuke Ikematsu) and Ushiwakamaru were successively captured by the powerful Taira Kiyomori (played by Tetsuya Watari), and temporarily saved their lives. A few years later, Ushiwakamaru grew up with the children of the enemy. In order to prevent future disadvantages to himself, Kiyomori married Tokiwa to someone else and ordered Ushiwakamaru to become a monk. After several years of training, the young man who devoted himself to Kurama Temple finally grew into a young hero with strong martial arts (played by Hideaki Takizawa). One day, he learned about his true life experience from Shingu Juro Yoshimori (played by Ren Osugi), and from then on he shouldered the mission of revenge for his family. Since then, the catastrophe and the mighty Genpei War kicked off...