The Invasion of Time - Part Three
The Doctor explains to the Time Lords that the Vardans, the creatures who just materialized, are in charge now. The Doctor and Borusa meet in the Doctor's newly redecorated office. It is lined in lead which provides the barrier he needs to finally tell Borusa what's going on.
Leela and Rodan make their way out of the Citadel and into the wilderness that surrounds the city. They run into Andred as they are leaving the Citadel. They meet other people, savages, in the wilderness led by a man named Nesbin.
The Doctor speaks to Castellan Kelner and has him make a list of any Time Lords who might cause trouble. The Doctor then asks Kelner to have them rounded up and expelled from the Citadel. The Vardans express some doubt when it comes to the Doctor's plans but he explains that the expelled Time Lords won't stand a chance in the wilderness.