The son of Katya and Artyom Avdeev took his documents from the institute and is leaving to work in another city: Zhenya found out that his father has a mistress and cannot tell his mother the truth. Katya accidentally finds out that her patient Anya wants to give the son of her married lover away as the father of her unborn child. At a family celebration, Katya realizes with horror that Anya is dating her nephew. Trying to protect him from deception, she destroys her friend's family. Having learned about this, Zhenya tells Katya the truth about her father, and she leaves Artyom. The troubles don't end there. Marta, Katya's sister, having used the services of a surrogate mother, is blackmailed and arrested. The caring policeman Fyodor helps Katya solve her problems.
