A documentary about a relationships between USSR and France.

The film tells about the complex relationship between two chemical scientists. Viktor Sviridov arrived from the province, where he works as an engineer at one of the factories, at the metropolitan institute in order to defend his project related to an urgent scientific problem. However, without the support of a longtime friend Alexei Grekov, he has no chance: most members of the academic council are opposed to his project and himself. But Grekov is also forced to choose between his wife's scientific career and obligations to another.

When a small state is threatened with capture by a much stronger one, only one thing can save it: the emergence of a competitor comparable to the invader. In a graceful and witty play by Scribe, hostilities unfold around a young officer, in whom the modest saleswoman of a jewelry store, the omnipotent Duchess of Marlborough and the Queen of England herself fell in love at the same time.

About the life and work of the poet Sergei Yesenin, his connection with his native country, its people and nature. Childhood, love, painful searches for his place in the new, revolutionary Russia — everything found a place in Yesenin's lyrics. Frames illustrating Yesenin's poetry and poems are side by side in the film with episodes of the poet's biography: the film reflects the days of his stay in America, World War I, revolution and village round dances, a daring uncle, a wise mother...

The film is a reflection on the responsibility of man to other people, native nature and the world around us, the problem of preserving Lake Baikal, on the banks of which a large construction project has unfolded. The first half of the 60s of the XX century, the story of the love of young Lena Barmina to an adult respectable person, bearing on his shoulders a heavy burden of responsibility for the activities of a huge enterprise. Construction engineer Chernykh and Lena, the daughter of a scientist, are doing everything to save the lake from harmful and unjustified plums. A difficult relationship develops between them and soon Lena realizes that she is in love. But after learning that Chernykh is married, the girl leaves...