Gao Yuyang is an ordinary college student with an almost obsessive passion for supernatural phenomena and a "Supernatural Phenomena Research Club" on the verge of disbanding. While filming their final paranormal investigation at an abandoned shopping mall, he and his friend Wang Yan encounter a genuine supernatural horror: the "Evil Spirit in the Wall." Cornered with no way out, Gao Yuyang uses the rules to turn the tables on the evil spirit, but is cursed in the process. The club is renamed, and so begins their investigation into supernatural phenomena in a world that seems ordinary.
