Moscow city. The building of the Kremlin Palace of Congresses. Meeting of the December Plenum of the CPSU Central Committee on the development of the chemical industry. Participants of the Plenum at the meeting, during breaks. Construction of a timber industry complex in Bratsk. Young soldiers come to the construction site on Komsomol vouchers. The soldiers get off the train, talk to the girls. G. Gaidabura's fiancé V. Galanyuk came to the construction site. A meeting. Labor day at a construction site. Barencevo sea. The submarine goes on a training voyage. On the bridge, 2nd-Class Captain Molyarchuk and his deputy for political affairs, Lieutenant-Commander Shiptsov. There are three friends in the diesel compartment: I. Yurchenko, S. Fedorenko, L. Shlandik. The boat goes deep. Combat alarm. Torpedo attack. Crew actions. Return of the submarine after the exercise. Sailors on vacation - swim in the pool, go skiing. Lenin's room in the Kantemirovskaya part. Senior Sergeant V. Subbotin writes a letter. The newspaper printed the text of his letter of appeal to the soldiers about duty and honor. The village of Belaya Bereza, Bryansk region, where Viktor Subbotin was born. The mother examines the photograph of her son. The workshop of the plant in which he worked. Victor with soldiers in the room of military glory, in the classroom for combat training. V. Subbotin with the Ukrainian collective farmer Nadezhda Zaglada, commander of the troops of the Moscow Military District, General A.P. Beloborodov, saying goodbye to the officers, leaving for study. Seeing young men in the army in Czechoslovakia. Army everyday life - soldiers wash the floor, peel potatoes, attend combat training classes. Tour of the Red Banner Song and Dance Ensemble under the direction of Alexandrov in Paris. Streets of Paris. Parisians at a concert. Performance of the dance "The Cossacks". The artists are congratulated by Maurice Torez. Aleksandrov receives a commemorative medal of the Normandie-Niemen regiment from former pilots.