A six-part CBC documentary examining the success of Doctor Who, the longest running science fiction series of all time. The Planet of the Doctor delves into the character of the Doctor, the nature of fandom, aspects of the series' adventures, the theory of time travel and the show's lasting influence on popular culture. Featured are interviews with members of the cast and production team from the original series as well as the perspectives of those who have been influenced by the show in Canada, the US and Britain.