Overview
"Dalek" is the sixth episode of the revived first series of the British science fiction television programme Doctor Who. It was first broadcast on BBC One on 30 April 2005. This episode is the first appearance of the Daleks in the 21st-century revival of Doctor Who; it also marks the first appearance of Bruno Langley as companion Adam Mitchell.
The episode is set in Utah in the year 2012, in the underground bunker owned by Henry van Statten (Corey Johnson), a rich collector of alien artefacts. In the episode, the alien time traveller the Ninth Doctor (Christopher Eccleston) and his travelling companion Rose Tyler (Billie Piper) encounter the bunker's only living exhibit: a Dalek, which breaks loose and attempts to exterminate everyone in the bunker after repairing itself.
Plot
The Ninth Doctor and Rose are drawn by a distress signal to a massive bunker beneath Utah in 2012, filled with alien artifacts collected by the bunker's owner, Henry Van Statten. Rose is offered a tour of the facility by Adam Mitchell, a man who buys and catalogues artefacts for van Statten. Van Statten takes the Doctor to show him a living alien being, which the Doctor recognises as a Dalek, a race thought to have been wiped out in the Time War. The Dalek is seriously wounded and weakened, and unable to break its bonds, but when the Doctor attempts to destroy it, van Statten orders his guards to restrain the Doctor and return him to his offices. There, van Statten has the Doctor secured, noting that not only does he collect aliens, but also tortures them to gain information, and proceeds to invasively and violently study the Doctor's body to learn more about his physiology.
Meanwhile, Adam has taken Rose to the Dalek. Rose takes pity on the weakened creature and touches its casing; the Dalek promptly absorbs her DNA extrapolating the biomass of a time traveller, and is able to re-energise itself. It escapes its bonds, kills several guards, repairs its casing, and connects to the Internet where it learns of the fate of the Daleks and realises it is the last surviving member of its race. With no other purpose, it proceeds to target and exterminate all non-Dalek life forms. Van Statten is forced to release the Doctor to help stop the Dalek, but the Dalek refuses to cooperate, and continues killing all those left in the Vault.
From Wikipedia (CC BY-SA 4.0).