A young woman returns to the secluded, abandoned psychological research facility where her deceased mother once worked. Accompanied by three friends, she discovers that the ghosts of the past have found their way to the present when the hospital's legacy of experimentation and madness tears away all known bounds of time, memory and space. 一位年輕女子在三位閨蜜的陪伴下，回到了母親曾經工作過的精神病院，該地早就廢棄已久，四周僻靜且充滿詭異的氣息。就在她們開啓大門的瞬間，困在過去的冤魂穿越了時間、記憶與空間，再次回到這間病院，此時她們才驚覺，一切早已無法挽回，而這間精神病院又隱藏著什麼不可告人的祕密？