The Substitute 2: School's Out

In Brooklyn, New York City, Randall Thomasson is murdered while attempting to avoid a carjacking. His brother Karl Thomasson, who is a veteran mercenary, attends the funeral and meets his estranged niece Anya. Karl decides to pose as history teacher to replace his brother at the high-school and investigate his death. Karl also teams up with the also mercenary Joey 6 to investigate the gang The Brotherhood that is blamed for the murder. The teacher Kara Lavelle helps Karl in the investigation and he is hired by the school. Karl finds violent and disrespectful students in class and protects Anya, while has a love affair with Kara. He also befriends a school janitor that is also a war veteran. Soon Karl discovers that The Brotherhood is using the school to disassemble stolen cars to sell and that the school's auto-repair teacher Warren Drummond is one of the leaders of the gang. The school becomes no mans land.