Long time ago, the Black Dragon was destroying human cities and devouring human beings. A sword imbued with magical powers was made in order to destroy the dragon. It was known as the Blade of Darkness. The dragon was defeated, and the sword disappeared after the battle. Now, unholy people attempt the resurrection of the Black Dragon. Shinobu Ryudo, a young girl from the Dark-Haired tribe, begins a long and perilous journey across the main continent to find the sword and prevent the dragon's resurrection. Meanwhile, the warrior Kayes is instructed by the oracle to look for the sword as well. Will the heroes join forces to defeat the evil?..