Надежный человек (1975)

Doctor Vera Pavlovna Zanemonets has recently been working at the Genetics Research Institute and is thinking about her dissertation. Her life is quite prosperous: her favorite job, family. One day, on an urgent call, Vera goes to her sister, who lives in the village and needs urgent surgery after an accident. But there is no surgeon in the village hospital, and Vera decides to urgently operate on her sister.