In 1785, in Songkhla Province, on the southern border of Siam (Thailand), the air was thick with the blood and dampness of war. Wu Zhijie, an ordinary office worker, unexpectedly transmigrated into the body of the son of a Chinese city lord. From then on, he embarked on a journey to change his family's fate and revive the glory of the Chinese in Southeast Asia. It all began with the war before him.