The Doctor, Tegan and Turlough land inside an undersea secret military base in wartime Earth, 2084. The base is about to be attacked on two fronts. Enemy agents within work to neutralize the base while an assault team of aquatic Silurians prepare without for a surprise attack. Written by
Did You Know?
actually performed the stunt where The Doctor jumps into a pool of water, which was ice cold. He was assured that the water was warm, but the BBC didn't have the budget for warm water. See more
What year are we in?
Around two thousand and eighty-four.
Little seems to have changed since my time.
Absolutely nothing, Tegan. There are still two power blocs, fingers poised to annihilate each other.