flutist in the forgotten past, at present the husband of a “big man’s” daughter and head of one of the Chief Directorate’s sections felt unwell one day: the forty-year-old man had a pain in his heart. This unpleasant incident provided an opportunity to meet a nurse named Lida. However, their stormy love affair ended, with Filimonov returning to normal life and an unloved wife.

Overview from themoviedb.org