A group of high school students, led by a rich boy Derek, is sick of school violence and decides to become underground vigilantes named "Brotherhood of Justice". It starts with the idea "watching people", but things quickly get out of control. "Brotherhood of Justice" turns out another gang of violence. Derek wants to stop it but it is too late, so he takes responsibility for it and gives himself to the law. 最初。 戴瑞（基努里维斯饰）原本是个年轻有为的青年，前途一片光明。然而后来毒犯以及暴力集团侵入他的社区，残害了无数的年轻人。于是他发起了一个秘密组织──正义兄弟会，决定以暴制暴，亲自铲除社区中的毒瘤。他们把那些毒贩、流氓、暴力份子。列出了清单，然后再用恐怖残酷的手段逐一扫除，没有人可以逃得掉“正义兄弟会”的制裁......
