In Mongolia. After the death of the reincarnation of the Dalai Lama, monks are looking for a replacement. A little boy, Monchetenger, would like to be this happy chosen one, in order to relieve his widowed and destitute mother. But the monks pass by without paying attention to him. He runs in pursuit of them and at the end of his strength, ends up collapsing and sinks into madness. Desperate, his mother decides to end her life and those of her son.
About the events of the final stage of the Second World War — the defeat by Soviet and Mongolian troops of the selected Kwantung army. Bacteriological weapons were created in the laboratory of Japanese General Ishii Shiro. Experiments were conducted on prisoners of war and political prisoners. Epidemiologist Dmitry Sokolov was assigned to solve the mystery of this laboratory. At the cost of his own life, he completed the task. The march of Soviet and Mongolian formations through the Gobi sands and the Khingan spurs was not only a brilliant military operation, but also a warning of the use of bacteriological weapons by Japan.
The construction of the mining industry and the methods of the young executives are told through the relationship between the engineer Gansukh and his girlfriend Suren, and it shows the conflict between the young people's views and goals in life.
The criminal Badarch takes advantage of the weaknesses of the teenagers, Saruul and Erdene, to commit a robbery and then leads them to the wrong path by drinking alcohol. They were involved in a murder case after killing Ochir, a citizen they met by chance while driving drunk. During the investigation of this case, the investigator Ulambayar meets with various people.
This film is intended to promote the mass movement of physical education to the masses. Choijil, a boastful young man with a tendency to ignore everything, meets Densmaa at a party and dreams of her. On the weekend, Densmaa and Yanjmaa suggested to Choijil that they go skiing on the mountain, but he agreed, even though he had never put a ski on his feet, and told the two girls how he was having fun.