In 15th century Japan, Asura is given a magical sword by a half human/half crow creature known as a Tengu. This sword bestowed the gift of immortality, but it also came with a price. Asura was now honor bound to become a protector of our world, guarding it against the forces of darkness.
Throughout time Asura has fulfilled his duty without question, but now a new threat arises. The sorcerer, Tanaro, who killed his master centuries earlier in feudal Japan has risen from beyond the grave to fulfill his mission to summon a powerful evil upon the earth.
His soul inhabiting a metropolitan police officer, Tanaro reunites with a modern version of his ancient cult to recover powerful artifacts that will enable him to open a gateway between our realm and that of a malevolent evil known as Akuma.
Along with his apprentices, Kotori and Domino, and police detective Drake, Asura must stop Tanaro and his minions from completing the ritual that will unleash hell on Earth.