Ukraine during the German occupation in 1943. 12-year-old orphan Mitka earns a living in a tavern under a false name by playing music every night for the mainly German guests. He is accompanied in his playing on the violin by the pianist Yegor. Even beyond the music, he tries to be a friend and mentor to the boy. Mitka, however, finds it difficult to accept the budding friendship. This is because none of the people involved has any idea that Mitka belongs to a Jewish partisan movement. Therefore, it was no coincidence that Mitka entered the inn weeks ago, but the possibility of smuggling explosives into the inn through him in order to detonate them at a convenient time. When a Standartenführer appropriates the inn for a visit by high-ranking officers, the moment for revenge seems to have arrived. However, something now comes to the forefront that Mitka has suppressed during the weeks of preparation; Yegor. Mitka begins to struggle with himself and the impending attack. After all, any bystanders are a tolerable, if not necessary, sacrifice for the partisans. Soon, Mitka is wrestling not only with anger over the murder of his family by the Nazis, but also with a deep need to spare Yegor.