Based on the novel of the same name by Yurii Mushketyk. For the second year, a laboratory headed by professor Marchenko has been working on the problem of photosynthesis. The work absorbs the entire team – each new result seems to confirm the correctness of the leader’s theory. The scientist Borozna, convinced that his colleague’s research path is mistaken, makes it clear to a doctor that it is time to stop and take a more critical look at the results.

A retired KGB colonel, having collected at his country house a file cabinet of people who had cooperated with the Committee in previous years, calls them back to his house and makes them perform certain tasks. But even on it there are bigger sharks - representatives of the mafia, who have guessed how much money they can now get from the former "peasants". However, one of them, dreaming to finish with the archive, will somewhat disrupt the plans of the above-mentioned characters.

The new secretary of the NPP party committee is fighting against high results' progress in equipment operation.

At forty-five, a writer decides to change his life and devote himself entirely to his art. Leaving behind a troubled family, he moves into an abandoned house…