No Overflix. Every summer, the No. 7 dormitory building is haunted. No student dares to stay overnight. The campus beauty Mo Ran chooses to stay overnight for her boyfriend Xiao Yuan, despite the dissuasion of her roommate Su Tong. Next, Mo Ran experienced a series of strange things. Is there really a ghost, or someone just pretending to be a ghost? The ending is beyond anyone's expectations...