It will cause a contagion so lethal, the Earth will be rid of its
human population within three weeks,
then it will burn itself out and the world will be ours..."
STORY PLOTLINE
The TARDIS arrives on the planet Oseidon where the alien Kraals have created an exact replica of the English village of Devesham and its nearby Space Defence Station and populated it with androids in order to rehearse for an invasion attempt.
