The battle for the office continues: Natalia takes advantage of the moment and blackmails the director. Nastya also suddenly has to plot. Maria Pavlovna considers herself a grandmother, and her granddaughter really wants to convince her. To do this, she asks the curator for help, and he turns to the caretaker, not even suspecting what a curious situation this will lead to.

If parents donate money for curtains, then what do teachers donate for? The answer is simple: you need to give gifts to your birthday colleagues. Natalia is shaking her authority, so she decides to collect two thousand instead of one. To do this, however, you will have to feel like a real collector. Maria Pavlovna also has an unusual idea. After learning that Nastya likes her classmate Bogdan, she tries to arrange for them to go to a stand-up.

Natalia seems to have lost the habit of working at school. Or the newly minted head teacher simply wasn't prepared for the fact that an ordinary remark to a student could end with a juicy spit in her face. The principal begs him not to say anything to Misha's high-ranking parents, so as not to spoil their relationship with the school. It requires many years of experience in dealing with arrogant boys who were poorly educated at home. And Maria Pavlovna has one.

The rapprochement with his granddaughter Nastya is going slowly but surely. The girl tells Maria Pavlovna that the numbers in an ordinary magazine no longer frighten anyone — you need to put deuces online. In addition, the annoying curator of the school is trying to convince the mathematician that every bad grade must be supplemented with a good one. Maria Pavlovna sees this as nonsense, and her daughter Natalia sees it as a chance to quickly expel her mother from school.

The harsh but fair mathematician Maria Pavlovna Trifonova finds out that for the sake of her health she urgently needs to slow down — she even has to drink antidepressants. The doctor also advises to establish communication with her granddaughter Nastya, whom Trifonova hardly sees. This is how an old-school teacher gets into a prestigious school of the future... and realizes that there is no peace here. After all, exact sciences require discipline and attention, and the age of technology has given children problems with both.