To dispel their roommate Jiang Xin's "resentment," Zhang Ruiqi, Feng Yanlong, and He Yiwei follow the instructions of Qiu Yun, a medium. They burn Jiang Xin's belongings and bury them on a small, deserted hill behind the campus. But they miscalculate the amount of cinnamon bark needed for Jiang Xin's birth date, forcing them to return at midnight and retrieve the bones. When they open the urn, they find Feng Yanlong's head inside. Terrified, Zhang Ruiqi bolts and falls to his death. He Yiwei thinks he's made it out alive, but while chatting with "Qiu Yun," he learns the truth: "Qiu Yun" is actually Xu Hao, the girl they pushed into a cement pit and killed years ago. She used the bone-burial ritual to exchange bodies. The curse that "only one can live" ultimately points to her, and she drags He Yiwei underground, where he disappears.
