The staged flight of traitors from the German camp may ruin the guerrilla camp. But danger awaits the main characters not only on a battlefield but also in their personal relationships.

After the plane falls, pilot Grivtsov, his girlfriend Katya and navigator Linko are to find their ways out to survive. Navigator Linko is captured by the Germans where he'll have to become a traitor to save his life. Katya and Andrey manage to hide from the enemies but the Germans noticed the signals of Katya's radio station. Now their only way to salvation is constant flight.

Germans are preparing a serious military operation, but a landing party is sent to help the guerrillas. Who will be the first the guerrillas meet: the traitors allegedly escaping the German concentration camps or the guerrillas? Will Katya resist the temptation to work for Germans?

Saving his loved one, Andrey is captured by Germans. Here, in the concentration camp, he meets navigator Linko. However, the cooperation with Germans his fighting comrade resorts to is not acceptable for Andrey. Former friend and brother-in-arms immediately becomes an enemy as his main task is to become bait and to destroy a guerrilla unit. By that time Katya has reached that guerrilla unit and carries out the first communication sessions.

Klimov's son gets into a car accident, lapses into a coma and dies. Olya Pankova experiences rejection of the donor liver. She gets Sasha Klimov's liver transplanted.

Olya Pankova, a charity girl, has long waited for liver transplantation. Right when the organ is found, an oligarch MP Osovetsky's Mercedes" has been blown up, thus he also needs liver transplantation. The donor organ is suitable for both. Grokholsky and Khodyrev order Klimov to operate on the MP, but he saves Olya.

A twin sister is ready to give her ovary to infertile Polina, but transplanting of reproductive organs is forbidden. Irina successfully gets permission for the surgery from Khodyrev, a deputy minister. Rumor has it that they've got an affair. Nonna steals Klimov's academic paper from Grokholsky. The hospital gets inspected by an investigating officer. Slava Lobachyov helps Marina Klimova yet again, taking her earned money from a scoundrel customer....

Anna Meshcherskaya asks to postpone her surgery, having seen a dream about getting a heart from the car accident-killed bride Nastya Linkova. She finds her and tries to talk her out of marriage, but in vain. Klimov prevents the accident and Nastya's death. When visiting Grokholsky's wife, Goltsov notices Klimov's academic paper acknowledged by an academician. Irina Alenicheva confesses her love to Klimov.

Tamara Lobachyova demands that her husbands pay her compensation for moral harm after he cheated her. Goltsov claps Klimov's paper on to Grokholsky's office. Mila Zubkova fakes doctor's certificates, trying to buy a kidney for her sick daughter, but the affair has been discovered. After she finds out that this was how Mila's fake relative wanted to make money for his husband's surgery in Israel, Irina offers to carry out an experimental surgery of...

Klimov saves his neighbor, simultaneously making her heart transplantation and delivering her baby. Lobachyov makes a TV program about Klimov. The decision to appoint a new head of the hospital gets postponed for a month.