Gus, a man who calls himself a "black swordsman", occasionally looks back on the past during his lonely journey - the days when he fought as a member of the mercenary group.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.