전기 고문으로 환자 여섯 명을 죽이고 원장도 자살한 희대의 악몽이 벌어졌던 레이븐스우드 정신병원. 원장에게 살해당한 17살 어린 소녀 사라의 원한이 깃든 곳이다. 120년 후 이곳은 유령 체험 장소로 관광지화 되고 어느날 소피아와 친구들이 이곳을 방문한다. 유령에 관심이 많은 소피아, 이를 부정하는 남자친구 칼. 칼은 유령따위 존재하지 않는다며 계속 비웃음을 날리는데…
For Gothic Callie, her deaf sister Ariel, computer nerd Chris, popular Sarah, and misogynist Ricky, their evening plans are about to be re-written. Taken to an abandoned military training school, they finds themselves the target of 5 sadistic killers, each with their own unique and different style of killing. They fight for their lives against sociopaths who know their environment intimately, becoming increasingly outnumbered as their friends are killed.
Three men are reunited after 30 years by the echoes of a terrible crime. Old men now, and at the end of the line they are intrigued to meet a young girl named Sarah. Through her they are plunged back into the sordid (and hilarious) belly of Australia's underworld, both past and present.
