At the end of the Southern Song, the Yuan army marched south and besieged Xiangfan. Three generals were entrusted with a desperate mission: seek help from the Five Towns and Six Masters. The descendants of King Yu, each gifted with extraordinary abilities but different in temperament, struggle against one another to claim the secret of King Yu, using every means at their disposal. The three generals are swept into the turmoil and become part of this great convergence of forces. The Seven Stars of Lion Stronghold swear brotherhood; father and son turn against each other at the Commander's Residence; the Medicine Venerable of the Six Harmonies Pagoda meets his end; the Gu Spirit of First Spirit Temple displays its might; Xuanji battles Fenglin; the Southern Fire clashes with the Western Metal. Their fighting shatters mountains and leaves both sides gravely wounded. Rain falls in torrents; loved ones part in life and death. Thunder shakes the heavens; justice is served. Ashes scatter; all vanishes like smoke. One breathtaking clash of dragons and tigers after another, one intricate conspiracy after another, all are for the secret of King Yu, guarded for a thousand years...