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 receiving the Mugendai Blade at the end of the Battle of Akagahara, Shoji has fled back to the open road. Meanwhile, the Red Lady has wasted no time in turning the country into a net of mercenaries and bounty hunters, all seeking the same quarry: A lowly ronin carrying a foreign sword. How long can Shoji evade the grasp of Clan Sasori, with every man, woman and child on the island hellbent on collecting the reward for his capture?