In 1765, at the end of the Ayutthaya period, at a village in Suphan Buri. The villagers live in peace. Despite the news of the war from Angwa, they thought that the Burmese army is not convenient for marching and make a war in flood season. With Unawareness of the Thai people, the Burmese army was able to easily invade Suphan Buri. The moon survives by disguising himself as a man, while many village women have been raped by the Burmese army. Duangjan's friend is dragged to Mangratho (Suthat Intranupakorn), a right-wing commander, but is saved by Mangrai (Pairoj Sangwaributr), a left-wing commander who is the son of Mang Mahasuranat (S. Asan Chinda), the general who commanded the army this time. Mangratho fights with Mangrai and is defeated, therefore he have a great malice toward Mangrai.

Three hot-blooded best friends: Khun, Jom and Tod who fled to Bangkok to become boxers without telling Det, the teacher of the ancient Dejchai Muay Thai camp. Jom's father, especially Jom, had dreams of becoming a champion boxer. Rajadamnern Boxing Stadium follows the brave footsteps of Kla. An event that refuses to fall in boxing is crippled. The person behind this incident is Sia Chai, whose influence in boxing has changed the lives of the Khun, Jom and Tod.