Natalia, a nun from a remote Russian monastery, comes to Moscow 17 years after the terrorist attack on the Dubrovka Theatre. She has been sent there to organize a memorial evening for the victims of the attack that took place in October 2002. We soon learn that Natalia and her family themselves were witnesses to the attack. Almost forgotten now by the outside world, the organizers and participants of the memorial evening or the Conference (as they have been asked to call it officially) are made to feel like a burden by the rest of the society. Following the chronology of the events as told by a few participants in the memorial evening, we learn the dark details of Natalia's personal story.