Even though some of you might say that this movie's plot is a little bit "predictable", I still find it innovative. This review might and will contain spoilers, so don't read it if you didn't watch the movie yet. The plot might sound and look simple, but it has a huge psychological depth. Some kids, who is obsessed with social networks and virtual life more than their real one, decide to punish a rude girl who post malicious comments about a soldier's death. They gather up to film this girl being punished. But when they enter her apartment, they discover that the girl has taken her life. But something smells fishy. It doesn't look like a suicide. Someone murdered this girl and they want to find out who's this psycho. The plot sounds like some cheap thriller movie, with young wannabe detectives who are chasing a pretty bad killer. Nope, the director fooled you right in the beginning. The main characters are the real murders. They played with this girl's mind, making her feel uneasy and scared. Yet, no one of them want to admit that this girl killed herself because of their words. Can some nasty comments push someone to commit suicide? Are words more dangerous than weapons? Yes, they are. This movie shows how easily oppressors become victims and victims become nasty fellows. Young Min is a real shining character. He admitted his wrongs, he was the first one who wanted to target this ""bad girl""", the first one who suggested that maybe this girl was killed by someone and also the first one who openly admitted that the killer was him. Actually, all of them took part in it. The internet is a nasty beast. If you keep feeding it, it will grow fatter and hungrier. Overall, this movie told a good lesson. The same lesson that all of us will soon forget after one hour. A must watch.