In the late Northern Song Dynasty, the world was in turmoil and the people were in dire straits. Lin Yu, a young man born into poverty, lives in a remote mountain village. His parents died early, and he makes a living by doing odd jobs. By chance, Lin Yu rescued a mysterious old man who was being chased by bandits. In order to repay his life-saving grace, the old man taught Lin Yu a set of profound internal skills and swordsmanship. He also told him that there was a secret chess game in Bianjing that related to the fate of the world. With the dream of changing destiny and saving people, Lin Yu resolutely embarked on a journey to Bianjing.