The collected class money is gone. The wallet of class leader Junghyun has disappeared. All the children look at each other with suspicion, revealing the prejudices and stereotypes that existed within them. Who is the criminal? Fortunately, the money was found, but the children still have bitter feelings. And one child will be forever blamed. Confession is about a theft incident that easily happens once or twice in school. It shows the chain of violence how group insanity and lie destroy individuals. The reality that one can be the criminal without one’s knowledge. The realistic performances by the young actors are outstanding.