三位朋友，拍摄一场极限真人秀的录像带，进入了鲨鱼笼潜水，但是没想到，很快会变成一场灾难性的转折，把他们留在巨大的白色鲨鱼出没的水域，把他们的录像变成一本关于生存和死亡的冷血日记。
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.
四个多年未见的大学同学聚会碰面，偶然中一部手机，里面有一条未发出的短信，提到有一笔钱在一所废弃学校里。他们不顾学校闹鬼的传闻和报导，夜闯废弃学校寻宝。随后发生了一系列灵异事件，同行伙伴相继失踪、死去……