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.
For the first time, Natasha saw Elektron Yevdokimov at the Polytechnic Museum, where she came with Feliks. Then she really liked the confident speaker. Relations with Feliks didn't work out, and Natasha, leaving home, became a flight attendant — that is what she called her new profession. Once in a cafe, before the next flight, Natasha saw Yevdokimov. They met and began to meet. They experience their feelings for each other in different ways. By the power of her love, Natasha makes Yevdokimov understand what love is.
While investigating a murder the police captain discovers a relation with the events of a medieval times...
