An international group of film students finds a disturbing video clip on the dark web which seems to contain poltergeist phenomena. Agreed that it's just what they need for their latest documentary project the group travels to the sanatorium shown in the video clip. Once there, they rig up their camera equipment and start to explore the possible ghost activities - until the true horror begins.。“小兄弟，听说你是最近才从下面刚飞升上来的？”文城主的态度更亲热了。别看李、金、吴三家对楚阳的来历始终无能确认，城主对楚阳的来历可是清楚得很，在九重天阕，身份证明无论多么高级的身份仍旧只有一张，楚阳是……