The weapon represents the unity of the human body (two hands, two legs, two elbows, two knees, and the soul/heart).
The story is set in the mystical kingdom of , which has been seized by the demonic Yaksha clan led by Lord Dehayaksa . The Legend of Muay Thai: 9 Satra (2018) - Plot - IMDb
The story is set in the fictional land of Ramthep City. It follows a young Muay Thai warrior named Bot . The kingdom has been invaded by the evil demon king, Yaks. To save his kingdom, Bot must go on a quest to find the legendary weapon, the "9 Satra," while accompanied by a Chinese princess and a monkey warrior.