Five years after an unexplained malfunction causes the death of 15 tour-goers and staff on the opening night of a Halloween haunted house tour, a documentary crew travels back to the scene of the tragedy to find out what really happened.在一次万圣节鬼屋之旅的五个晚上，一场莫名其妙的故障导致15名游客和工作人员死亡，一位纪录片摄制组又回到悲剧现场，去发现究竟发生了什么。