Given the question: Build a movie plot around this: Where was the ball thrown by Tsar Nicholas II in 1916 held? Catherine Palace
The answer is:
In 1916, Tsar Nicholas II hosts a ball at the Catherine Palace to celebrate the Romanov tricentennial. His mother, the Dowager Empress Marie Feodorovna, is visiting from Paris and gives a music box and a necklace inscribed with the words "Together in Paris" as parting gifts to her youngest granddaughter, eight-year-old Grand Duchess Anastasia. The ball is suddenly interrupted by the sorcerer Grigori Rasputin, the former royal advisor of the Romanovs until he was banished by Nicholas II for treason. Feeling betrayed and seeking revenge, Rasputin sold his soul in exchange for an unholy reliquary, which he uses to place a curse on the Romanov family, sparking the Russian Revolution. Only Marie and Anastasia are able to escape the ensuing siege of the palace, thanks to a young servant boy named Dimitri who shows them a secret passageway in Anastasia's room. Rasputin confronts the two royals outside on a frozen river, only to fall through the ice and drown. The pair manage to reach a moving train, but only Marie climbs aboard while Anastasia falls, hitting her head on the platform and giving her amnesia.Ten years later in 1926, Russia is under communist rule and Marie has publicly offered 10 million rubles for the safe return of her granddaughter. Dimitri and his friend/partner-in-crime Vladimir search for a look-alike to bring to Paris and pass off as Anastasia so they can collect the reward. Elsewhere, Anastasia, now using the name "Anya", leaves the rural orphanage where she grew up, still suffering from amnesia. Accompanied by a stray puppy she names "Pooka", she decides to head to Saint Petersburg, inspired by the passage on the necklace she still has. She is unable to leave Russia due to not having an exit visa, but an old woman advises her to see Dimitri at the abandoned palace where he has made residence. There she encounters Dimitri and Vladimir, who are impressed by her resemblance to the "real" Anastasia and decide to take her with them to Paris.Bartok, Rasputin's albino bat minion, is nearby and...