Young Liu Hengshun, who idolizes Duan Lin, the chief of the Jiuhé City Public Security Bureau, aspires to be a teenage hero who punishes evil and upholds justice. However, due to suffering from "Stove Disease," he is constantly restricted by Duan Lin. During the Zhongyuan Festival river lantern event, clues emerge about the unresolved tragic fire case of the Jizi Troupe on Baiting Mountain. Liu Hengshun, Du Shuai, and Sun Xiaochou decide to explore Baiting Mountain at night, where they discover Xiao Bai, the holy maiden of the Mogu Dao hiding there. After a confrontation and clash, Liu Hengshun learns that the fire ten years ago was no accident. The appearance of the mysterious Pipe Man behind the scenes further complicates the case, pushing the truth further away...