Set in a warrior kingdom where the lethal martial art known as Shadow Skill is practiced to safeguard the realm, the story follows young Gau Ban. Motivated by the legend of Scar Face, a warrior who has defeated 2,000 opponents, Gau Ban dreams of becoming an invincible fighter. He trains rigorously under the guidance of his older adopted sister, Elle, a master of Shadow Skill. Conflict erupts when a rogue band of intruders launches an assault on the castle to seize a mysterious box containing a secret.