When Diana’s husband returns home one night with big news—he has taken on a second wife, and expects Diana to live in harmony with the situation—she does what is least expected and plans to make a life on her terms.

Milan, 2030: Diana Cavalieri is a double agent for the secret syndicate Citadel, who infiltrated Manticore, the rival agency that destroyed Citadel eight years ago. Trapped behind enemy lines, Diana has a chance to leave the agency forever, but she has to decide whether to trust a surprising ally: the heir of Manticore Italy, Edo Zani.

This landmark 90-minute BBC One documentary tells the inside story of the tumultuous and unprecedented week that followed the death of Diana, Princess of Wales, exploring how she came to have such an extraordinary effect on the nation and people around the world. 　　The film features in-depth interviews with her sons, the Duke of Cambridge and Prince Harry, speaking in detail about that week's events from the moment they heard the news of their mother's death to the day of the funeral itself, as well as reflecting more broadly on her life and what she meant to them both then and now. 　　The film also includes interviews with family members, close friends, political figures and journalists, many of them speaking for the first time about the events of that week.