In one of the cities of Siberia, the keeper of the thieves' common fund, nicknamed Shahinya, was killed. A large sum of money has disappeared. Witnesses claim that the famous lawyer Mashkovtsov was driving the car seen at the crime scene. Investigator Andrei Laptev, who is leading the case, is trying to find Mashkovtsov, but he has disappeared. Soon the operatives discover the corpses of the raiders who killed Shahinya. And again, the investigation has an assumption that Mashkovtsov was involved in the murder. Laptev talks with the daughter of an elusive lawyer, and she unexpectedly reveals to the investigator shocking details of the personal life of their family...