At a high school in Tokyo, Ami is a serious and beautiful new teacher beloved by both students and colleagues. However, the class she serves as homeroom assistant is filled with delinquent students, causing her constant distress. In particular, Ohashi and Meguro repeatedly cross the line—smoking on school grounds, bullying janitors, and defying authority. No matter how much Ami reprimands them, they refuse to listen, leaving her utterly frustrated. Then one day, an unexpected event occurs. A mysterious phone call arrives from the delinquents: "We've realized our mistakes. Come hear what we have to say."