Events develop in one of the military hospitals, where a high-class specialist Sergey (Ahtem Seitablayev) arrives for work. He didn’t plan to stay there for a long time since the next trip was scheduled and he was a part of the UN peacekeeping mission. But the sudden outbreak of war made him say goodbye to his intentions, as it changed his and other people's destinies.

It is enough to look at Sergey to feel the inner strength, the ability to make quick and right decisions and the way he is responsible for his actions. All these qualities help him to be a master of his craft and help people to cope with serious illnesses. He used to work in an accelerated rhythm, so with the outbreak of hostilities in the hitherto peaceful city, he realized that his skills are needed here and now.

TV series Life on the Line is a vital war drama, which is relevant at all times. It attracts many viewers because the plot focuses on the intricate fate of different people. The main character helps them deal with both physical and mental wounds. At the same time, he is trying to bring order to his life, since one of his colleagues, Olga (Victoria Litvinenko-Yasinovskaya), is the love of his life, and her husband is his worst enemy.