Orphaned by the increasingly violent clan wars that have been instigated by the treacherous and mysterious Red Lady, young Minagawa Shoji flees home, lost and alone, into the mountains above his scorched village. There he finds and befriends a teacher; a mysterious old man who teaches him to speak with the Voice of the Mountains. Years later, returning from his voluntary exile, Shoji finds his world more war torn than ever. After happening upon the aftermath of a decisive battle at Akagahara, Shoji finds himself the unwitting custodian of the legendary Mugendai Blade, and its companion Scorpion Stone. Will he use these relics to turn the tide against the malevolent Red Lady? Or will he further withdraw from these troubles, and retreat back into the mountains?