The film tells about the complex relationship between two chemical scientists. Viktor Sviridov arrived from the province, where he works as an engineer at one of the factories, at the metropolitan institute in order to defend his project related to an urgent scientific problem. However, without the support of a longtime friend Alexei Grekov, he has no chance: most members of the academic council are opposed to his project and himself. But Grekov is also forced to choose between his wife's scientific career and obligations to another.

The Earth is facing great problems in the nearest future it is in the lack of sun light. Physicist Olmin is leading the project to build a special tunnel - made of elementary fractions - from the sun to the earth, in order to the earth could get much more sun energy and light. At the same time a strange flower is brought to the Earth from a dead planet.

A music teacher is trying to organize a choir in the school he works in.

Sometimes divorce process could be really painful. This is exactly the case for the heroes of this romantic drama.

A night become real "fun" for a family with the visit from very strange person.