Natasha Berezina is a young doctor, a cardiologist who has high hopes, already an excellent surgeon, without five minutes a candidate of sciences. But in Natasha's personal life everything is not so smooth. She divorces Max, with whom she met for two years, but family life did not work out. On the day of parting, Natasha faces even more stress: she learns that surgeon Anisimov, who was recently transferred to them from another hospital, operated on her patient during his night shift. Natasha has been preparing for this patient's operation for a long time, his case is exactly the topic of her candidacy. She does not believe that the patient suddenly became so ill at night that the operation did not wait until the morning, and believes that Anisimov took a patient from her to serve the management and get the position of head of the department. Natasha tries to seek justice with the help of colleagues, but to no avail: all the female staff of the clinic admires Anisimov, the only man free from marriage in the department. The conflict between Natasha and Anisimov seems unresolved… But suddenly everything changes, and everyone is already interested to know why Anisimov and Natasha turned from enemies into friends.