A writer who studies the paranormal believes that low frequency tactile sound is the cause for reported ghost sightings in an abandoned subway station. In an attempt to debunk the sightings, she breaks into the station to record evidence.
直言不讳的青少年汉娜去一位受欢迎的女孩家里过夜，却没有意识到她只是被邀请成为恶作剧的受害者。然而，当事情变得更加险恶时，汉娜的母亲成为她度过这一夜的唯一机会。
