He came out of nowhere, heading the telecommunications company Efir, which was slowly falling apart after the death of the old director, Leonid Veryyaev. He claims to have been a friend of Leonid, who died tragically in a training race. He bears the strange name "Deimos", which reminded Leonidas's group of friends of their past secrets, which no one seemed to know about. And he firmly intends to appropriate the widow of the deceased director, Nastya, who grieves for her husband and is not going to start a new relationship and even, in principle, look at other men. Friends, colleagues, Leonid's wife are trying to solve a mystery that sometimes seems insoluble, and at this time Deimos confidently manages a company whose competitors are clearly playing a dishonest game and will stop at nothing to try to gain the market for galactic communications.