1984, Sverdlovsk, USSR. A shy freshman, an entrepreneur, a poet and two charming it-girls navigate life in a student dorm, sharing their griefs and joys, all for one and one for all. Suddenly a horrible accident blows up the life of the dorm when a female student commits suicide. The dorm is a miniature model of the world that encapsulates the full range of human passions, acts of bravery and cowardice, aspirations for virtue and failures, of love, friendship and betrayal.

A group of scientists is sent to the planet Arkanar to help the local civilization, which is in the Medieval phase of its own history, to find the right path to progress. Their task is a difficult one: they cannot interfere violently and in no case can they kill. The scientist Rumata tries to save the local intellectuals from their punishment and cannot avoid taking a position.

After getting fired from the police department, Roman Shilov wants to spend some time in personal affairs. But he gets a call from a wife of Michael Krasnov, who in past provided evidence, which helped to put into jail a dangerous killer. Now Nadya Krasnova tells Shilov that Michael has been kidnapped by unknown persons. Shilov goes to help his old friend and gets nvolved in the criminal events.

St. Petersburg at the beginning of the 20th century. In the well-known comedy magazine "Carousel" there was a stir - the Boss came. This is a chance for the talented writer Kukushkin. He's ready. And for the Editor - Kukushkin, simply, the find is a lot, variegated, “yellow” and the topic “on the verge of a foul”. Suddenly, everything went head over heels - The landlord receives a note and ... the plot spring is released: intrigue, love, betrayal and sparkling humor.