The film is dedicated to B.N. Petrov - the largest scientist in the field of technological process control in various fields of production. The artist in the studio. They say the President of the Academy of Sciences of the USSR A.P. Aleksandrov, Vice-President of the Academy of Sciences V.A.Kotelnikov. Photographs of Academician B. N. Petrov. The pilot is at the helm. Foundry. Robot. Streets of Smolensk. Street, school named after B. N. Petrov. Moscow city of the 30s. Worker at the machine. High-altitude installers. The first tractor. Books. The building of the Moscow Power Engineering Institute. The building of the Institute for Management Problems. Wartime Moscow city. Balloons. Anti-aircraft guns. Classes at the Moscow Aviation Institute. General Designer A. Tupolev is speaking. Aircraft. Work in the design office. Yu.A. Gagarin. Jubilant people on Red Square. Engineers at the control panel. The work of the lunar rover. BN Petrov is speaking. The signing of a cooperation agreement between the USSR and the United States. Flight of the cosmonauts of the USSR and the USA. B. N. Petrov's office.