"Detective Di Mobai" is set in the Tang Dynasty during the Tianbao period. Di Mobai, a descendant of Di Renjie and the young minister of Dali Temple, along with Su Yuejian, the head of the Criminal Department who is proficient in the art of memory and disguised as a man, and the handsome and bad-looking Tie Shou, who was born in the Jianghu, uncover layers of mysteries in the undercurrent of the prosperous age.
Starting from the theft of the Night Pearl in Chang'an, the three were involved in a series of strange cases: the headless corpse on Zhuque Street, the drowned man in Qujiang Pool, and the poisoning case of Jiaofangsi, which revealed the secrets of the previous dynasty; the Buddha statues wept blood in Luoyang Longmen Grottoes and the disappearance of the watercraft pointed to the revenge plan of Wu Zetian; the secret room in Jiangnan West Lake and the corpse in the tea garden were related to the mystery of the Silk Road caravan; the haunting of the border military camp and the poisonous salt case were hidden precursors to the Anlushan rebellion.
As the remaining pages of "Tui Bei Tu" emerge, the conspiracy of the mysterious organization "Xuan Ming Hui" gradually emerges. Di Mobai's life experience, the murder of Su Yuejian's family and the Anshi Rebellion eventually become a huge intertwined web. In front of Mawei Station, the ultimate truth was revealed in the dust of the collapse of the prosperous age. Five volumes of strange cases connect the secret trajectory of a dynasty from prosperity to decline.