On campus, Jiang Xin dies unexpectedly. To escape the psychological trauma of her death, her roommates Zhang Ruiqi, Feng Yanlong, and He Yiwei follow the medium Qiu Yun's instructions and go to a remote hill to “bury the bones.” But they get the amount of cinnamon wrong and have to return to retrieve them. During the trip, Feng Yanlong dies a gruesome death, and Zhang Ruiqi falls from a building in terror. It turns out everything began with their earlier plan to scare Qiu Yun, who was actually a vengeful spirit that died years ago in an unfinished building on the hill. He Yiwei eventually discovers that the strokes in Qiu Yun's name are connected to Jiang Xin, and that their dates of death are the same. The horrifying truth slowly comes to light.
