Since the modern series of Doctor Who started in 2005, there has been a Christmas Special every year. The first special, “The Christmas Invasion” was the introduction of David Tennant as the Tenth Doctor. This year’s “Twice Upon a Time” is Peter Capaldi’s last story as the Twelfth Doctor, as well as the final episode for show-runner Steven Moffat. When Doctor Who returns sometime next fall, Chris Chibnall will helm the show and Jodie Whittaker will be the Thirteenth Doctor.
In a time travel twist, the Twelfth Doctor who is refusing to regenerate after the events of series 10’s finale, finds he is not alone in the South Pole. The First Doctor, portrayed by David Bradley and also refusing to regenerate, stumbles upon the Twelfth Doctor. The First Doctor doesn’t believe he’s with the Twelfth incarnation. Mysteriously time stops. Even the snowflakes are frozen. Interrupting the Doctor fest is a World War I captain who has been pulled from his timeline and dumped in the south pole. A glass figure soon approaches, disturbing the captain. The First Doctor invites him into the TARDIS and is surprised to find the Twelfth Doctor’s console room. Suddenly the TARDIS is rocked. There is a much larger ship above that has seized the capsule and begins lifting it into a grand chamber.