The trailer for this Saturday’s episode of Doctor Who, “The Beast Below” has been posted online! A synopsis has also been released:

It features Amy Pond’s first trip in the TARDIS and the Doctor takes her to the distant future where she finds Britain in space. Starship UK houses the future of the British people as they search the stars for a new home. But when Amy explores she encounters the terrifying Smilers and learns a deadly truth inside the Voting Booth…