山海奇闻之幽冥镇守录

The young constable Xiaoyu is demoted to the Nether Prison of the Underworld Department, where he unexpectedly becomes entangled in the mysterious disappearance case of a legendary thief. Partnering with the coroner Aruan and the warden Yan Tiesuo, he discovers that the prison is actually an ancient sealing ground meant to suppress the divine abomination known as "Foul Qi." The trio persistently thwarts conspiracies, repairs the seals, and becomes unconventional guardians who protect the balance of the mortal realm.