The film tells the story of former US President John F. Kennedy and former First Lady Jacqueline Kennedy four days before he was assassinated on November 22, 1963. Natalie Portman will play Jacqueline, or Jackie. According to the film's global co-producer and producer, Xiyi Films, the industry was not surprised that the creative team chose Natalie Portman to play Jacqueline Kennedy. In addition to her superb acting skills, it is also because of her unique intellectual temperament.