Leningrad Research Institute. Pasteur. Professor Smorodintsev, who created a vaccine that prevents measles disease, in the laboratory, under a microscope, with children. A laboratory assistant works with a vaccine. Vaccine and solvent packaging for shipment to the consumer. Caucasian ridge (filmed from the plane). The city of Ordzhonikidze. City area. Terek river. Georgian military road. Darial gorge. Tamara's castle. A group of tourists visiting the castle. Georgian studio during the filming of a historical film. The top of Mount Kazbek. Monument to the builders of the Georgian Military Highway. Cross pass. Monastery. Tbilisi city. City streets, motels. Tourists eat barbecue. The plot tells about a Tajik woman, geologist Sarajan Yusupova. Sarajan on the veranda with his family during tea drinking, drives in a car through Dushanbe, in the laboratory of the Department of Mineralogy and Petrography of the Tajik State University, in the mountains with his students. Rural landscape. Herd of cows. Shepherd V.I.Sholokhov plays the horn. Girls from the "Cherry" ensemble before going on stage. The soloist of the ensemble is V. Afonina. The ensemble is dancing.