During the Jiajing period of the Ming Dynasty, Taoism was prevalent, Yan Song was in power, and the people were in dire straits. A white-haired Taoist priest named Zhong Yu suddenly appeared and punished his senior brother together with his eldest grandson Mu Yun. A strange murder with a borrowed sword involved the three major martial arts families in a turmoil. Duanmu Fang, the eldest son of the Duanmu family, was entrusted with investigating the mastermind behind the case. The emotional entanglement between Bai Mei, the most beautiful woman in the martial arts world, and her eldest grandson Muyun also surfaced. Who is the real murderer, strange murders, tangled love and hatred, and the legend of the world against the background of the times