Soviet sailors boldly defend Leningrad from the German fascists.
Professor Lavrov, a student and follower of Michurin, is trying to refute the discoveries of the theory of heredity and is successfully working on developing a new breed of chickens with high egg production and productivity. The brave experimenter is supported by the Central Committee of the CPSU in the person of Comrade, who arrived at the experimental poultry farm. Ostroumova.
