Boris comes to his hometown to find Alka and ask her forgiveness for betraying her love in his youth. But a chance meeting with his former deskmate Tanya leads him to the annual party of his classmates living in the city. The joy of their communication is disrupted by the news of the murder of the first beauty of the class, Nadezhda, and a day later another school friend almost dies. After analyzing the facts known to them, Tanya and Boris come to stunning conclusions: in both cases, the crime was committed by the same person who knew the victims since childhood, and what’s worst is that he sat at the same table with them. Who is he? Man or woman? What made him or her commit the crimes? Are their reasons really hidden there, in distant childhood? Is it possible to tell the investigation about your guesses without risking slandering an innocent person? Boris begins his own investigation. And continues to look for Alka...