Sorokin unexpectedly returns to the perinatal center with a check from the Ministry of Health. He conflicts with the staff and threatens Kaverin with a negative report. But his true goal is to get Kaverin to arrange a meeting with Marina to resolve the issue of paternity. At the same time, Kaverin and Zharova are faced with a very difficult medical case. To save the baby, they will have to perform a unique intrauterine operation...

Kaverin's new patient is Irina Demidova, a fitness instructor with intestinal obstruction during pregnancy. The situation is complicated by the fact that Demidova is hiding from her husband, classmate Kaverin, the secret of her past life. The operation involves a huge risk. Zharova volunteers to operate, but at a critical moment loses her composure, and Kaverin has to take responsibility for himself. Zharova and Bragin continue to plot, involving the builder Ageev in them...