Captain of the Ministry of Internal Affairs Aglaya Mezentseva and investigator Vsevolod Kosinskiy, one of the best specialists in the search for children, are unraveling the case of the missing 5-year-old grandson of the world famous conductor Mark Krechetov. The child mysteriously disappeared while walking with the nanny, and the woman herself received a blow to the head and lost her memory. Literally all members of the Krechetov family come under suspicion, and Kosinskiy does not spare anyone in order to achieve results. Aglaya does not accept Kosinskiy's methods, but nevertheless becomes his best student. The more Aglaya unravels the tangle of complex family relationships and financial fraud in the Krechetov family, the more she has to sacrifice - her peace of mind, her career, the lives and feelings of other people. And even put your unborn child at risk.