Tatyana is a teacher at a technical university. Her personal life has long been laid on the altar of science: she has made a successful scientific career, colleagues at the department respect her. But the students hate Tatyana with all their hearts. All because "Grimza" (that's what the students call her) never makes concessions to anyone. Therefore, Roman, one of the students with an "unsatisfactory" grade, asks Aleksey, his uncle, a lover of life and women, to hit on Grimza so that she "kinders" by the next session. The student only hopes to pass the exam, but this venture radically changes the lives of Tatyana, Aleksey, and Roman himself.