At the end of the Ming Dynasty, the Wu family of Cangzhou was wiped out. Only the young Wu Yang escaped, taking with him the family heirloom, the Seven-Star Golden Saber. While being hunted, he turned the tables and killed a powerful enemy, then stumbled upon a mysterious bronze token. He learned that the Jianghu Register, which was revised once every thirty years, would soon be updated on Junshan Island in Dongting Lake. To uncover the truth behind his family's murder and the hidden past of his father, the Golden Saber Who Guards the North, Wu Yang set off for Dongting alone. The undercurrents of the martial world were surging, and forces from every quarter gathered on Junshan. Waiting for him was not only a clash between the world's greatest fighters, but also a grand conspiracy that would turn the martial world upside down.