Soo-kyung is a news reporter with a troubled past. Back then when she was a teenager, she and her best friend Min-soo wanted to go to a park, but there Min-soo disappeared without a trace. Soo-kyung felt responsible and decided to become a journalist, to investigate the case on her own. But until now she has found no sign of her friend. One day, she gets a call from her childhood-friend Min-gook who insists that he saw Min-soo. Soo-kyung doesn't believe him at first, but finally she is able to meet Min-soo again. Min-soo in return confirms her identity and also recognizes Soo-kyung, but she behaves totally different. Soo-kyung feels that something is still terribly wrong and everything points to Min-soo's boyfriend Dong-min.

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。 网络时代带来便利，也衍生了假象与罪恶，通往地狱的大门慢慢开启……