Boris Belousov

The very first work of a young scientist Igor Panteleyev caused a sensation. Not surprisingly, they are interested in foreign intelligence. Soviet security officers are taking measures to protect the scientist. The name of Panteleyev disappears from the pages of newspapers and magazines. The scientist is transferred to work in another research institute, changing his surname to Evdokimov. But due to chance, foreign spies found a researcher.

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...

Lena, a woman in her late twenties, loves her boyfriend, but in time comes to see that their relationship serves no useful function. What's more, she sees that her friends are for the most part empty-headed lackeys, causing her to wonder just what is the point of her life.

This play is one of the repertory plays of Russian theater – in the first year of production (1878) it was on the stage of seventy provincial theaters. The main interest of the audience was the triangular relationship conceived according to the plot as the basis of a dramatic intrigue.