One evening at the house of Commissioner Maigret the bell rang. Construction Minister Poan asks the Commissioner to urgently come to his apartment, keeping this request secret from the police authorities. At the meeting it turns out that the report with which Poan was to speak at a government meeting two days later disappeared from the minister's apartment.

1978 film

A young and ambitious engineer comes into conflict with old-fashioned structures that don't acknowledge his honesty.

In the cramped cockpit of the boat, of which Ivan Burlakov has long been the captain and where Elenka, not jokingly called his wife, works as a sailor, a new employee appears - the captain's assistant Sergei. Outwardly energetic and open, he quickly achieves Elenka’s love. And just as quickly - Ivan’s dismissal.

A priest's daughter is fictitiously married to a revolutionary populist. The youth commune organized their wedding and arranged their move to the city. Over time, the young people fell in love with each other. When he is convicted and sent to penal servitude, she voluntarily follows him.

Ana starts falling in love with an ecologist engineer that comes with her father who is from Russia.

1942, Polar region. The Germans are preparing to capture Murmansk. The submarine Sch-721 is considered lucky, and its captain Aleksei Strogov has the ability to extricate himself from the most difficult situations. He also develops tactics for a periscope-free torpedo attack, despite the skepticism of colleagues and management. And now, when the Happy "Pike" had to take on board the crew of another Soviet submarine, and she was on the seabed with almost no oxygen, Aleksei manages to save people and perform the operation, paying for it with his life...