- Story background: The story takes place in the last years of the Chu Dynasty. The court was corrupt, corrupt officials were rampant, and the people were suffering constantly. The capital city of Bianjing is prosperous on the surface, but in fact there is an undercurrent. A mysterious killer organization "Xuetang Pavilion" quietly rises and uses bloody means to eliminate corrupt officials, but there seems to be a bigger conspiracy hidden behind it. Kyoto Prefectural Police Chief Shen Yanbing was responsible for investigating a series of bizarre murders, but in the process he discovered that his wife Su Wanyue was inextricably linked to this organization.
