Mikhail and Nyura are getting ready for the wedding. Suddenly, Klava returns to the city, Mikhail’s first love...

A story of two arctic aviation pilots in the Soviet post-war times. The younger one is a son of a man repressed and killed by the Stalin regime, who also was a friend of the captain.

The hero of the film, the world record holder in the high jump, after a car accident according to the conclusion of doctors, should forever leave the sport. But against all odds, he is doing everything possible to return to the national team. Chance brings him together with a surgeon, also fanatically devoted to his work - and the hero again wins international competitions.

The action takes place in Siberia where a mysterious wall appears from time to time. Scientists are dispatched to study it and some of them believe that the wall is produced by some sort of alien intelligence, "the Martians", as they call them. The scientists attempt to communicate with the Wall, but all they experience in return are hallucinations about their past experiences. In those visions they are faced with some unresolved issues, repressed memories, and absurd dream-like situations. They meet people – messengers – from their past who reveal to them some simple truths about their own lives, which may be hard to accept, so they dismiss those messengers as the Martians and stubbornly continue attempting to "understand" the Mysterious Wall using their rational minds.