The martial arts master Shangguan Xingyu encountered a homicide while chasing the black clothed man, and the strange appearance of the deceased aroused his curiosity. Unexpectedly, this was just the beginning of a series of murders, followed by the appearance of a secret room murderThe medical school massacre, several cases all point to the "Butterfly Murder", and the people of Dali Temple are deeply embroiled in a mystery. Sister Mo Zhaoyan is also in crisis. Shangguan Xingyu was entrusted to investigate this case at Dali Temple, in collaboration with Southern XinjiangQi Nu, Dali Temple Shaoqing and others established a crime solving team. Can they dispel layers of fog and break the deadlock to uncover the real culprit?