A Soviet propaganda film about the feat of one of the first Soviet agitators-film mechanics Trofim Glushkov, killed by the White Guardians in the years of the Civil War.

Music school graduate Lyubochka Vetkina agrees to work temporarily in a kindergarten. After a series of comical adventures that Lyubochka experiences with the kids, she comes to an unexpected decision to dedicate her life to raising other people's children.

Volodya Kuznetsov, a factory worker, entered the institute. Hoping to have more free time to study, he went to work as a master-mentor in a vocational school. Soon Volodya realizes how responsible and interesting his work is. He can no longer think of himself without his students.

Elena Tarasova is a young, modern woman who works as a cab driver. She is lonely, disappointed in men, but has a close friend, a car racer, to whom she flies to different cities for dates. Once, after the refusal of the head of the taxi park to give her another vacation at her own expense, Lena decides to deceive him and asks a sailor she met on the street to introduce himself as her fiancé. This little trick turns out to be a big real feeling for Lena and her accidental chosen one - navigator Kovalev...

An ancient blade with diamonds is stolen from the museum where Alexei Gurov works as a restorer. Soon an old icon is stolen from Gurov's apartment. Head of the crime investigation is the police colonel Georgy Arefyev. Everyone knows that Gurov is obsessed with collecting rarities, so suspicion falls heavy on him.

A young teacher goes to a school for adults. He is younger than many of his students and some of them are starting to miss school.

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...

A chance meeting between Ivan Balashov, an old Muscovite, and an 18-year-old Georgian boy who has come from a village in Adjara to enter university becomes the beginning of a great friendship.

The young man decides to go into business. The main advantage of "novice businessman" is a great ability to mimic other people's voices.