The Cybermen have invaded Earth, but the Doctor and Torchwood are about to confront an even greater threat.
“Army of Ghosts” is the twelfth and penultimate episode in the second series of the British science fiction television program Doctor Who which was first broadcast on 1 July 2006. It is the first episode of a two-part story; the concluding episode, “Doomsday”, was first broadcast on 8 July.
The episode takes place on contemporary Earth, some time after the Doctor’s and Rose’s visit to Earth in “Love & Monsters”. During this time, the public have become accustomed to intermittent appearances of ghosts. The Doctor tracks the source of the ghosts to the Torchwood Institute, where the Doctor learns of the Cybermen from “Rise of the Cybermen” and “The Age of Steel” crossing a breach in the Void created by a Dalek-piloted Void ship.