When trainee forensic doctor Lin Xiaomeng took over a female corpse with an ancient charm engraved on her chest, she thought it was just a rare ritual murder. Until she found a bronze key engraved with the word "Fengdu" in the stomach of the corpse, and her mentor died mysteriously after leaving a blood letter saying "Never go to that place." In order to pursue the truth, Lin Xiaomeng and the detective Zhao Zhengting who investigated the case were forced to step into a corner forgotten on the map - the real Fengdu City. This is not the mythical underworld, but a forbidden place for the living that follows strange ancient laws. They discovered that every bizarre death spanning thirty years pointed to an upcoming "Hundred Ghosts Night Walk" in which living souls were sacrificed...
