Battulga used to work as a teacher in high-school. Now he does not teach anymore. He even promised himself that he will never teach again because of an unpleasant past experience. However, he receives a job offer at a high-school to teach again and take over a senior class. Although he refused the offer, his colleague Yanjmaa and his best friend Ganaa manage to convince him to accept the job. At his new school he faces many challenges presented by his new students. He works hard to get his whole class graduate their high-school successfully.