During the war-torn feudal wars in Japan, the Awa clan faced certain extinction from a rival clan backed by demonic forces.

However, a careless promise by their lord leads to both salvation and disgrace when their family dog brings back the head of the enemy warlord and insists on marrying the lord's daughter. Their unnatural union bears fruit but when both are killed, the eight unborn pups are reincarnated as the eight Dog Warriors - The Hakkenden.

As they slowly find each other and come together as a group, these eight warriors, who represent the eight separate aspects of Bushido, engage in bloody battles with demonic entities and evil samurai in a final attempt to redeem their clan!

When their village was wiped out five years ago, only Shino Inuzuka, Sosuke Inukawa, and the girl Hamaji, who was raised as if she were their sister, survived. And both men inexplicably have the same peony-shaped birthmark. Genpachi Inukai and Kobungo Inuta were raised hundreds of miles away as foster brothers, but they too share the same birthmark. When they went north as part of the army three years ago, they went to confront demons and came back forever transformed. Now the Imperial Church has come for Shino and Sosuke and they must find eight mystical gems and their owners or face a fate worse than death at the hands of the Church.

"Satomi Hakkenden" tells the tale of eight samurai brothers and their adventures, with themes of loyalty and family honor, as well as Confucianism, bushido and Buddhist philosophy.

"Satomi Hakkenden" is based off a 19th century 106 volume epic novel written by Kyokutei Bakin. The novel was written over a period of 30 years. Kyokutei Bakin had gone blind before finishing the tale, consequently, dictating the final portions to his daughter-in-law Michi.

Taking place in the future, during this time wars were occuring in heaven, mostly for possession between the eight moons created by the savior Fuse that surrounded God's land. When the war ended, there was only one ruling family - that of the Oowaris, and the remaining son gained control of all the moons of heaven, except for one. Meiten, the moon of the pope, where people refrained from war and were therefore out of it's terms. Eight people. Each from one of the eight moons. Each possessing one of the jewels - the elements that compose Earth. They are those who are destined to become saviors of humanity. All of them have sacrificed for these jewels, and are determined to complete their duty to Queen Fuse who entrusted these to them. When the mad emperor Kai threatens to revive a ghost who wants to prevent the restoration of Earth, these eight must battle using the powers given by their jewels in order to create Earth and defeat those who want to prevent it.