The main character is a school teacher. Most of her pupils are difficult teenagers. Woman constantly suffers bullying and teasing from them. No one pays attention to the fact that everything is going to get out of control. In the next incident a real gun falls into teacher’s hands. She takes children hostage but does not know what to do next. Police prepares to assault and the teacher and her charges still have some time to find out the causes of conflicts and resolve the situation without using force.