House-Museum of V. I. Lenin in Kuibyshev. Scientific and theoretical conference dedicated to the 90th anniversary of the move of the Ulyanov family to Samara. Production processes at the Penza Machine-Building Plant. The plot tells about the inspector of the criminal investigation department of the Kuibyshev Department of Internal Affairs A. Krupich: A. Krupich at the crime scene, in the forensic laboratory, during the interrogation of a witness. Views of the village of Krasnaya Baltia in the Ulyanovsk region. Everyday life of villagers.