Elena Mihailovna, having worked all her life in the only school of a provincial town, lives modestly in retirement. Unexpectedly she learns of a fatal diagnosis, which can at any moment end her life. Instead of an unbearable anticipation, she resolutely begins the preparation for her own death, in order to simplify the procedure for her son. She has not seen her only son for over five years because he works in the capital. Oleg is constantly busy, and he does not have time for his lonely mother. At the same time with all the new problems, the heroine receives as a gift a huge carp, which changes her life.