有一天，一个人对他的朋友说：“我可以用两句话来形容我自己。”朋友问：“是什么话？”他回答：“我都忘记了。”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.
