The film begins in 1431 feudal Siam. It is a time of political upheaval, treachery and danger. The opening scene explains how during the reign of Boromarajatiraj II of the Ayutthaya Kingdom, the Ayutthaya royal court became more powerful than the Sukhothai kingdom and expanded to the east. The Ayutthaya army besieged the Kingdom of Gods for several months. The king sent his son, Prince Indraracha to rule the kingdom.At the new kingdom, Lord Sihadecho is a provincial ruler, and a gallant and noble warrior of a formally great dynasty. His son, Tien, a spirited and unyielding youth, aspires to be just like his father, but is forced to undergo dance lessons instead much to his disdain. Meanwhile, the treacherous and power-craving Lord Rajasena, a former city administrator of the capital city, plots to seize total control of all Asia and has amassed the greatest army in Asia. Rajasena sends out vicious assassins to 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 captured by a group of savage slave traders, who throw him into a pit with a giant crocodile when he proves uncontrollable. Tien is saved by Chernang (Sorapong Chatree), leader of the renowned "Pha Beek Khrut" (Garuda Wing Cliff) guerilla group, who attack the slave traders. Chernang throws a knife to Tien, proclaiming "your life depends on you, young boy," with which Tien kills the crocodile. Intrigued by his physical prowess and attitude, Chernang takes Tien to a soothsayer, who says the boy has a great destiny, that "spirits will fear him" and that he will become the greatest warrior who will ever live, and as such Chernang takes in Tien as his adoptive son and raises him like himself as a guerilla and a bandit. Tien gets his wish to train as a warrior and more besides, growing up to excel in the arts of war, including man-to-man fighting, incantation, and subterfuge. Tien is instructed in a variety of traditional Asian fighting styles, including muay boran and krabi krabong, Japanese kenjutsu and ninjutsu, Malay silat, and various Chinese martial arts. He also learns the use of weapons such as the ninjatÅ, katana, jian, dao, talwar, nunchaku, rope dart, and three-section staff.[1]Now a young man and with all these martial arts heavily instilled, becoming the greatest warrior to ever live, Tien (Tony Jaa) is eager to quench the vengeance in his heart by killing the slave traders, which he does. He then goes on to kill Lord Rajasena by posing as a dancer during a celebration. Returning to the Pha Beek Khrut, Tien is mystified to find their village deserted. Suddenly, he finds himself confronted by wave after wave of masked assassins, the same ones hired by Lord Rajasena to destroy his original home. As the fight progresses Tien is too enraged to notice that the masked villains are none other than his Pha Beek Khrut comrades though their individual combat styles are glaringly recognizable. As Tien tries to defeat the masked assassins he climbs on an elephant but then Bhuti Sangkha a.k.a. The Crow Ghost (Dan Chupong uncredited) appears and kicks Tien off of the elephant. Bhuti's nature is unknown and he has a small role in the film. Then he takes the elephant away. At last confronting their leader, Tien finds they have been surrounded by Rajasena's army, which is led by the tyrant, himself. Lord Rajasena reveals he had survived thanks to an armored tunic concealed beneath his state robes. Chernang unmasks and admits to his part in killing Lord Sihadecho, as he was in league with Rajasena. Chernang explains that he must carry out Rajasena's orders, or his family (the Pha Beek Khrut) will be killed. As Tien reluctantly fights Chernang, Chernang pins him to the ground, once again calls Tien his son and asks him to take his life in payment for killing his father. Chernang then forces Tien's blade to snap and slash across his throat, taking his life.The film ends on a cliffhanger with Tien, after defeating dozens of Rajasena's warriors, being finally overwhelmed by hundreds more. Rajasena orders Tien to be taken away to be slowly tortured to death. It is unclear whether Tien survives, and if he does, how it is so. An extremely ambiguous and vague voice-over explains that Tien "may find a way to cheat death again", and shows him with a fully-grown beard (which he does not have in the film) standing in front of a scarred golden Buddha statue, perhaps indicating reincarnation.
Output: Question: How did Tien lose his parents?, Answer: In a vicious assassins