Di Renjie is ordered to patrol the various regions of Jiangnan. While passing through Lin'an City, he becomes embroiled in a mysterious case of a missing girl. Through in-depth investigation, he discovers that the case is linked to a local cult involved in debauchery. The complexities of the case are shrouded in suspicion, and the shadow of a sinister monk looms in the background. With extraordinary intelligence, Di Renjie unravels the intricacies of the case, gradually closing in on the truth, and embarks on a journey of investigation where justice collides with evil.