The year is 1997, and Great Britain has a newly elected prime minister, the youthful, optimistic Tony Blair (Michael Sheen). In Buckingham Palace, the Queen doesn't appear to be fazed by Blair's arrival. But when Princess Diana is killed in a tragic car accident, her authority is tested as never before. While the Queen Mother (Sylvia Syms) and Prince Philip (James Cromwell) agree with her decision to remain at their holiday estate and not publicly acknowledge the tragedy, Tony Blair feels differently. Unfortunately, so do the English people. Making matters worse is the out-of-control media, which has begun to castigate the queen for her silence. In order to retain her grip on the country that she has served for so many years, she must swallow her pride and let the world know that she does, in fact, care.