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!