"With the deterioration of the aristocracy and the rise of the warrior class began a brutal era. Long wars between the Heike and Genji clans ended with the Heike ruling the land. The people hoped for a lasting peace, but found only pestilence and disaster. And when began the nightly slaughter of Heike warriors at Kyoto's Gojoe Bridge, there rose the fear that the capital's festering misfortune had awoken a demon..." Following his conversion to Buddhism, Musahibo Benkei, a master fighter and killer for hire, vows never to take another life. His inner peace and faith in pacifism, however, is shaken and ultimately broken by the attacks from a trio of fighters known only as "the demons". Taking up his sword once more, he is forced to set out in a bid to end their murderous reign of terror...