A recognized mathematician proves to the plant management that the new pipe rolling mill needs to be stopped and improved. The conflict ruins his daughter’s personal life when she is abandoned by her fiancé, the head of a pipe-rolling shop, a careerist and a coward. Yielding to the persuasion of a friend, the hero decides to leave practical activities and move to Sverdlovsk to devote himself entirely to science. However, realizing that the source of his talent is practice, he returns to his home factory...

In the third movie colonel Zorin is investigating two murders.

Russian naval pilots risk death to help stop a American Submarine whose defective reactor threatens a nuclear meltdown.

Once a second-grader Dima Kruglikov learned that all the great people became so because they did not waste time on trifles, they had a clear regime of the day. Wishing to become great, Dima decided to live on schedule: to walk, help his grandmother, and even make friends. Getting into ridiculous and absurd situations, the main character of the film realized that the regime of the day is important, but everything must be done wisely.

Based on the fantastic story by Kir Bulychyov "Can You Ask for Nina?". Guests gathered in Vadim Nikolayevich’s apartment to celebrate the 1979's New Year with a cheerful company. The landlord unsuccessfully tries to reach his friend Nina. He, dialing a number, gets to a girl who is also called Nina. Her answers seem strange to Vadim Nikolayevich until he realizes that he is in some unusual way talking with a child from Moscow in 1942.

Under the guise of "student construction team of graduate students" a brigade of "covenants" arrives to the collective farm, expecting to get one thousand rubles for the construction of the "fountainarium" that is not envisaged by the estimate. However, under the gun of a local photo correspondent and the close attention of the collective farmers, Ruslan Ruslanych, a student of evening school, drunkard Tyulkin, illuminator in the theater Savchuk and hiding from alimony Panin, in order not to give himself away, are forced to work diligently and to be rehabilitated.