Spring 1942. Moscow schoolgirl Katya is corresponding with a cadet of the naval school Kostya, who is unknown to her. When sent to the front, his echelon must pass through Moscow, and they have a chance to meet ... Our days. Muscovite Katya, a talented violinist and a wild child, without realizing it, begins to follow in the footsteps of the history of Katya and Kostya, her peers from the war years. Will she be able to finish an amazing teenage love story that began years ago?
A young teacher Tanya is taking a school theater group to a festival in Sochi. For the sake of order, the head teacher of the same school, Maria Genrikhovna, is traveling with them. Tanya is not enthusiastic about the boss's eye, but Maria Genrikhovna quickly breaks all stereotypes about head teachers. In her face, Tanya finally finds herself a worthy adult - either a role model, or a mother, or a mentor. Meanwhile, the festival insistently demands a return to reality - the organizers demand to change the name of the performance, the poster, and, preferably, the worldview. Choose the path of compromise for the sake of children or take a principled position? In any case, Tanya and Maria Genrikhovna will have to answer to twelve teenagers who are experiencing their first dramas at the festival.
