This is the city: a technological paradise built by an advanced race. Its glittering towers reach proudly for the stars, and its spires are looped by elevated roadways. The people that lived here were enlightened and contented. They travelled in bubble-topped saucer cars, along moving pavements or in anti-gravity tubes. Obedient robots tended to their every whim. Disease, war, famine and pollution had been eradicated. Food machines synthesised all essential nutrients into pill form, and personal rocket ships brought the solar system within reach. The people of the city befriended Venusians and Martians alike. The city is self-cleansing. Its systems harness solar power and static electricity. Its buildings are constructed from a metal that will never rust or tarnish. It will stand forever as a monument to the achievements of the human race. This is Earth. The year is 2000 AD. This is your future. Welcome to the Space Age.
This is another in the series of original adventures for the Eighth Doctor.