1st plot. III Congress of the Comintern (Moscow, 1921) A group of delegates to the III Congress of the Comintern near the building of the Bolshoi Theater: men are talking, among them the secretary of the Central Executive Committee of the USSR A.S. Yenukidze. People walk along the street past the building of the Bolshoi Theater, along Teatralnaya Square, on the left - the building of the Metropol Hotel. A group of delegates to the III Congress of the Comintern at the entrance to the building of the Bolshoi Theater. K. Zetkin approaches the delegates, exchanges with all greetings. Congress delegates enter the theater building, K. Zetkin enters together with everyone. A group of delegates to the Congress of the Comintern, including: G. Zinoviev, delegate from Poland K. Radek and others, are talking at the building of the Bolshoi Theater, where the meetings of the Congress are held. A group of people, including the German communist K. Zetkin, pass by the building of the Bolshoi Theater. Two men (possibly delegates to the Congress of the Comintern) walk to one of the entrances to the building of the Bolshoi Theater, present their credentials to the sentries, enter the building. 2nd plot. Service dogs test. / g. Moscow, 1923-1929 / A dog barks in front of a movie camera. Doberman Pinscher dogs on a special platform perform the command "lie down". General view of the obstacles on the site where the dogs train. The dog barks. Instructors with dogs, then move away from the dogs and give commands to their pets at a distance. Dogs carry out the commands "sit", "lie down". Dogs, on command, approach their instructors, execute the command "voice".