PARK Duk-joon is an old man living by himself. Every night, he suffers from insomnia attacks brought on by disturbing flashes from his dark past. He tries in vain to pray and find solace in religion. His only friend is Mrs. LEE, a church elder who gives him weekly church bulletins. Mrs. LEE invites him to a testimonial at her church. Duk-joon is surprised to see the face of the speaker. He is LIM Gwang-han, Duk-joon’s former superior officer from his days as a police interrogator in the 80s. They meet for the first time in years, Gwang-han brings up Duk-joon’s painful past again.

在网络监查科兼职的大学生俊赫，为了和生气的女友世熙（朴宝英 饰）重归于好，转而求助于女友的妹妹——高中女孩静美。静美是一个沉迷以来网络的时尚女孩，她答应帮助俊赫，条件是俊赫能帮她找一些网上封禁的稀奇古怪的视频。万般无奈，俊赫只得帮忙寻找，谁知却意外下载到一段诡异的视频。这段视频每次的文件名每次都会改变，每次打开后也会呈现不同的内容，甚至在看完之前都无法关闭。倒霉的静美似乎恰恰碰上了那个传说中的诅咒视频，在此之后，她的周围接连发生诡异事件。

秀贤是一名四年级的小学老师，即将结婚。一天，她班上的学生约翰来到忙碌而幸福的秀贤面前。约翰向秀贤坦白说自己正在遭受家庭暴力。然而，第二天，约翰的谎言却在等待着秀贤。

该片改编自同名人气游戏，讲述深夜校园发生奇异现象，驱魔师继承人熙民从恶灵中拯救朋友们的故事。