A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes uncontrollable anger to rise up. She gets eliminated again from a competition she had prepared for a long time. Eunsu decides to write her last piece with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.。影片讲述了一个电梯无故困人杀人的故事。纽约著名地标建筑----千年大厦的电梯突然失控,一名盲人和保安先后因此离奇毙命。这仅仅是突发事故吗?女记者詹妮弗对此展开调查,设法解开电梯神奇行为背后的秘密。然而,随着她调查的深入,因电梯而死亡的人数越来越多,调查也演变为一场意想不到的噩梦……。