With the heart of a warrior, a legendary swordsman wields an ancient, demonic weapon. But with every soul he takes, the more darkness consumes him.

Set in the early Edo Period, a time when Japan was transitioning towards peace, and warfare was fading into history, an aging Musashi embarks on a covert mission. Armed with the mythical "Oni Gauntlet," Musashi embarks on an epic journey to vanquish the lurking demons.