Last of the Time Lords (3)

Location: Earth, The Valiant
Date: 2008, 2009
Enemies: The Toclafane, The Master
One year has passed since the events of "The Sound of Drums."
The Earth has been conquered and its population enslaved, the Doctor is the Master's prisoner, and the warships of a new Time Lord Empire rise from the ashes. The fate of the world is in Martha Jones' hands.