"DOCTOR WHO, the children's own programme which adults adore ..."
Gerard Garrett, The Daily Sketch
 

While Doctor Who was exiled on Earth and restricted to the Twentieth Century, the charming but hypnotically evil Master, whose one ambition is to destroy Doctor Who, walked off with the Doomsday Weapon file. Doctor Who, commanded by the Time Lords to stop the Master - at any cost - is directed to a bleak planet in the year 2471. Hidden somewhere on that planet is the Doomsday Machine - lurking somewhere in that Time Zone is the Master! 

Will Doctor Who, hampered by alien monsters, locate and dismantle the Doomsday Weapon before the Master triggers it? It's a terrifying countdown affecting all mankind - past, present and forever!