The Imperial Seal has been handed down through the ages since ancient times. It grants immense power to the warriors it selects. This is the tale of those warriors. It is an era of chaos and civil war. Great armies collide in titanic battles, and legendary heroes etch their names into history. It is also a time of death and devastation, where the land's inhabitants live in perpetual fear of the sword. Into this turmoil steps the reluctant Rikuson (Lu Xun), whose family served as guardians of the Imperial Seal until Sonsaku stole it. At his mentor's request, Rikuson offers his services to Sonsaku, intending to verify the will of the Imperial Seal. However, assassins kill Sonsaku, and the Imperial Seal is lost. Thus begins Rikuson’s journey to recover the Imperial Seal and uncover his destiny.