I can't believe I sat through this whole movie! I'm a fan of horror movies, and I don't expect them to be cinematic masterpieces, but this one was especially bad. First of all, the plot made very little sense. A group of jealous, and competitive, girls fight over who should be the lead singer of their k-pop girl group once they finally achieve unexpected success. Of course there is some kind of revenge curse involved, set off by a borrowed old pop song, but the story behind the curse is not only hard to follow, it doesn't make much sense. I was bored as the lead character tried to find out the secret behind what was going on. Much of it also felt predictable. What bothered me the most about the plot was that none of the fans of this supposedly successful pop group seemed to care if it's members lived or died. That's not exactly fan loyalty, and made the plot seem completely unrealistic. The acting was pretty standard for a bad horror movie. They did a good enough job being catty, and looking scared when they needed to. The music was average k-pop, but the main song was not as catchy as I think it needed to be. I was expecting something more disturbing, like suicide club. Instead, this was a sub par teen horror flick. Fans of gore will get a few moments that are somewhat gross, but most of the scares rely on eerie sounds, creepy images, and of course a long haired ghost. And the ending felt like a blatant rip-off of carrie, which was laughably bad. I've seen so many good reviews for this that I can't believe I watched the same movie as everyone else. I would not recommend this movie to my worst enemy. My guess is that you really have to love melodrama about k-pop groups in order to tolerate this. There are much better movies out there for real horror fans.