The Fifth Doctor, Nyssa, Tegan and Adric arrive on a spaceship which is headed for Earth. On board they meet natives of Earth from various different eras, and also three Urbankans: Monarch, Persuasion and Enlightenment. What are the aliens' intentions when they reach Earth? Plot The TARDIS materializes on board a vast and advanced alien spacecraft, observed by a hovering surveillance device which conveys the arrival of the Doctor, Tegan, Nyssa and Adric to an observing being that is in control of the vessel. The TARDIS crew become separated and the Doctor and Tegan reach the bridge of the vessel where the green-skinned commander introduces himself as Monarch, ruler of Urbanka, and his associates and fellow Urbankans are the Ministers of Enlightenment and Persuasion. The leader is intrigued by talk of current Earth civilisation and reveals their ship is bound for Earth. Shortly afterward Enlightenment and Persuasion seemingly regenerate into human form, dressed in garments Tegan designed to demonstrate contemporary Earth fashions. The TARDIS crew are reunited as guests aboard the ship and it soon becomes apparent that there are four distinct human cultures represented on the vessel by a small group of humans â Ancient Greeks, the leader of whom is the philosopher Bigon; Chinese Mandarins and their leader Lin Futu; Princess Villagra and representatives of the Mayan people; and Kurkutji and his tribesmen, of the very ancient Australian Aborigine culture. The Urbankans have made periodic visits to Earth, each time getting speedier in their journeys. This time they have left their homeworld after erratic solar activity, storing three billion of their species on slides aboard their craft, and it seems the current journey is their last and they now wish to settle on Earth, which they are due to reach in four days time. The Doctor becomes suspicious of Monarch and soon learns that the Urbankan does not plan on peaceful co-existence: instead, he has developed a virus to wipe out humanity, and this will be unleashed before the Urbankans disembark. He also finds out that the humans aboard are not descendents of the original abductees, but are the original people taken from Earth and converted into androids like the three Urbankans walking around on board. The four leaders of the peoples have been given additional circuits to help them reason, but this facility can be taken away, as Bigon learns when he crosses Monarch once too often. He explained to the Doctor that Monarch strip-mined and destroyed Urbanka in a quest for minerals to improve the ship, and now plans to do the same to Earth. Monarch believes that if he can move the ship faster than the speed of light, he can pilot it back to the beginning of time and discover himself as Godâ Adric, nevertheless, is rather taken with Monarch, and tensions between him and the Doctor become very strained. It takes the truth to break the alienâs hold over the boy. The Doctor now sets about over-throwing Monarch and, with the help of the human androids led by a restored Bigon, a revolution is put into effect. Enlightenment and Persuasion are de-circuited, while Monarch himself is exposed to the deadly toxin and killed. It seems he was a product of the weak âflesh timeâ after all, having never, as the Doctor suspected, been fully converted into an android. The humanoid androids decide to pilot the vessel to a new home on a new world, while the TARDIS crew departs. Back in the console room, Nyssa suddenly collapses to the floor in a dead faint. Cast notes Guest stars in this serial include Stratford Johns as Monarch and Burt Kwouk as Lin Futu. See Celebrity appearances in Doctor Who. Continuity The Big Finish Productions audio drama Primeval provides an alternative explanation, beyond mere exhaustion, for Nyssa's collapse at the end of this story. The canonicity of the audio dramas, however, is unclear. When the Doctor tells Tegan "Who'll believe us? We'll be laughed at!" when she wants to get to Earth to warn them about Monarch's plan, he has clearly forgotten the purpose/existence of U.N.I.T., the United Nations Intelligence Taskforce, for which he was unpaid Scientific Advisor (through most of his third incarnation). He makes use of his U.N.I.T. connections later in the season, however. This is the third occasion of a recurring theme where Adric 'betrays' the Doctor, or else Romana, Nyssa or Tegan, gaining the villains' trust and then later saving them. See State of Decay , Castrovalva , Kinda and, to a lesser degree, The Visitation and Black Orchid Goofs The Doctor describes the Maya civilization as having reached its peak "8000 years ago"; the very earliest Maya settlements began 4000 years ago. The Doctor claims the population of the Earth to be 3 Billion, where as it was around 4.5 Billion by 1980, being about 3 Billion in around 1960. [1] Few non-indigenous Australians speak an Aboriginal language (of which around 200 exist) as fluently as Tegan demonstrated with her conversation with Kurkutji. It is almost certain that the language that Kurkutji spoke 40,000 years ago would have since evolved into a totally different language that his people would be using today. Production Serial details by episode: Episode Broadcast date Run time Viewership (in millions) "Part One" 18 January 1982 23:36 8.4 "Part Two" 19 January 1982 24:11 8.8 "Part Three" 25 January 1982 24:09 8.8 "Part Four" 26 January 1982 24:53 9.4 [1] [2] [3] The working title for this story was Days Of Wrath. Although Castrovalva was the first story aired which featured Peter Davison as the Fifth Doctor, this story was the first in the season to be produced. It was originally decided that after Castrovalva, the Doctor would only have two companions, Adric and Tegan. As a result, the character of Nyssa was to be written out of the series at the end of this story. However, Peter Davison strongly opposed this move because he felt that Nyssa was the companion who was "most suited to his vision of the Doctor." Given this, producer John Nathan-Turner and the rest of the production team relented. In print Doctor Who book Four to Doomsday Series Target novelisations Release number 77 Writer Terrance Dicks Publisher Target Books ISBN 0 426 19334 2 Release date 21 July 1983 Preceded by Castrovalva Followed by Earthshock A novelisation of this serial, written by Terrance Dicks, was published by Target Books in April 1983. Broadcast, VHS and DVD release This story was released on VHS in September 2001. A DVD release has been confirmed for 15th September 2008. Clockwork Cabaret RSS feed is www.clickcaster.com/channels/clockwork cabaret.xml Less