Rick, a high school teacher, whose marriage failed and his work did not go well, was transferred from his former work unit to become the principal of a school called Brandon. This middle school is notorious for violent crime. In this school, almost all acts of violence such as drug abuse, drug trafficking, robbery and rape have become commonplace, and skipping classes and refusing to take exams are left unregulated, and those who serve as principals here have no good results. But Rick wanted to run the school well, so he made a "prohibition" rule. But at the first student assembly, Duncan, the leader of the student group, gave Rick a kick. The contest between Rick and the violent gang represented by Duncan began. Students and teachers in the school who gradually accepted Rick's management system were attacked by Duncan's gang. Rick was very angry and blamed himself, but Duncan's behavior did not shake Rick's determination to change the school spirit. Rick insisted on fighting Duncan to the end and bringing the black sheep to justice. Duncan and Rick had a face-to-face confrontation. Duncan's men were killed against Duncan's will because they were unwilling to go after Rick. With the help of the school police, Rick subdued Duncan and handed over to the police who came. Duncan finally.