Civil war. Polish interventionists approach Berezina. The Red Army temporarily leaves Belarusian lands. Partisan detachments are organized, one of which is led by Bolshevik Stepan. His brother, who is in collusion with Polish spy Kapusta, is also in this detachment. With Kapusta's help, Polish lancers who have appeared in the village reach the partisan camp and capture the headquarters. Yanko manages to warn the headquarters about the movement of the White Poles, and the partisans are forced to retreat through impassable swamps. They manage to escape and join the Red Army, which occupies Minsk on July 11.

The film tells about the founder of the Mongolian People's Revolutionary Party, the leader of the Mongolian People's Revolution - Damdin Sukhe-Bator.

A geological expedition looking for gold in the Russian taiga is beset by a gang of thieves.

About the life of the Russian biologist Ivan Michurin. 1912 year. Having rejected American offers to work abroad, Michurin continues his research in the Russian Empire, despite the fact that his ideas are not perceived by the tsarist government, the church and idealistic science. Michurin is supported by prominent scientists of the country and he continues to work hard. After the October Revolution, a small Michurin garden in the city of Kozlov (the biologist's homeland) becomes a large state nursery.

A border guards are hunting a spy infiltrated to the USSR.