Tien, a boy who aspires to grow up to be like his father, Lord Sihadecho (Santisuk Promsiri), a gallant and loyal warrior. The treacherous and power-craving Lord Rajasena (Saranyu Wongkrajang) plots to seize total control of the country. He sends out vicious assassins do murder Lord Sihadecho's family and his loyal soldiers. The only survivor from this massacre is Tien, who manages to escape with deep vengeance in his heart.
Tien is then captured and almost killed by slave traders before being saved by Chernang (Sorapong Chatree), leader of the renowned "Garuda's Wing" guerilla band, who takes Tien in as his adoptive son and raises him up as a bandit. Tien grows up excelling in all kinds of martial arts and war strategies including man-to-man fighting, boxing, incantation, and skills of such war weapons as sword, saber, club, and explosive.
With all forms of martial arts instilled, Tien (Tony Jaa) eagers to vanquish the vengeance in his heart by killing Lord Rajasena with his own hands.
But he must first get pass Rajasena's highly-skilled and vicious killers.The battle leads to the origin of the scar of vengeance that comes at a price of one?s blood, flesh and soul. Only unwavering faith can save Tien's life.