The Doctor and Nyssa arrive on Earth in Greenford. It is completely deserted. They finally come across a man who is staggering through the streets, ignoring their attempts to talk to him. He finally reaches the window of a television rental store, and watches the programme depicted on the televisions in the window. His attention is completely on the programme, and he is oblivious to the Doctor and Nyssa's presence. Nyssa's new "friends" decide the best way to stop the programme is to blow up the BBC. Reg works out the construction of a bomb, refusing Nyssa's help.