AKirill Sergeyevich, a retired Army officer, becomes the new school Headmaster. Used to a strict and orderly routine, he at first finds the chaotic bustle of everyday school life hard... It is not easy to deal with both the children and the teachers, especially with the students' favorite Marina Maximovna who teaches Literature. Well then, wasn't Marina surprised to discover the "martinet" Nazarov to be a perceptive and tactful person and an experienced tutor.

He considered his family life perfect. Normal, and sometimes big wages quite satisfied a beautiful and gentle wife. The child didn't cause much trouble. All that was needed for his happiness was available. But the wife is gone. She left not to another, but left, so as not to be unhappy.