Margarita Kruglova is a talented obstetrician-gynecologist whose life falls apart after a tragedy: being accused of murdering her husband costs her her career, the trust of friends and family, and custody of her daughter, who was only 11 at the time. After her release from prison, Margarita tries to get her daughter back, but the girl was raised by her father’s parents, who are not ready to let her go to her murderer mother. Margarita also gets a job at the clinic where she once worked, but now as an operating room nurse. Day by day, she proves her competence, yet investigator Yegor Kostrov lurks in the shadows, monitoring illegal operations at the clinic. One wrong move, and Margarita will end up back in prison.