After a brutal attack, Polina can't leave her home—fear and trauma have turned her life into a prison. Her only support in life is her husband, Vlad, who saved her that day and now surrounds her with care and love. But one day, Polina's friend is found murdered: the perpetrator's signature matches her own attack down to the last detail. Vlad urges Polina to remain silent, so as not to attract the maniac's attention. However, fragments of memories form a chilling picture: what if everything she believed in was a lie?