Gus, un homme qui se fait appeler un "épée noire", revient parfois sur le passé pendant son voyage solitaire - les jours où il s'est battu en tant que membre du groupe de mercenaires.At that time, he followed a man named Griffith.The ambitious, cruel and wise leader led them to fight all the way and step into the palace of royal power.However, fate is like a surging tide, pushing them to a turning point that completely changes their lives.The glory and blood of the past are now only scars and irreversible prices engraved in the depths of the soul.