The documentary film "Unknown Tsvetaeva" is dedicated to Anastasia Ivanovna Tsvetaeva (1894-1993), an outstanding master of the memoir genre, the younger sister of the poet Marina Tsvetaeva. Through the prism of her life, the tragic history of the country and the fate of the people next to whom Anastasia Tsvetaeva's life passed are traced. The writer, art critic Stanislav Aydinyan, who was her literary editor and secretary from 1984 to 1993, her granddaughter and relatives will tell about the wonderful and talented writer.