On the set of "EastEnders", a celebration of the history of film, music, theatre and television; the team appraise rare and unusual items of entertainment memorabilia, including a script for the first episode of "Doctor Who."

The Doctor's search for the third segment to the Key to Time brings him to present-day Earth, where the travelers have to contend with stone circles, Druidic rituals and a not-so-mythical goddess known as the Cailleach.

The TARDIS arrives in the future on the planet Pluto where there are now six suns, a breathable atmosphere and a large industrial community. The Company controls the planet and exploits the workers, pays them a pittance and then taxes them on everything imaginable. The Doctor and Leela join forces with an underground band of rebels led by a man named Mandrel.

On 25th-century Earth, the Doctor runs into his old enemies the Cybermen while trying to rescue a group of paleontologists.

The Doctor discovers thousands of metal cylinders on the space freighter.

In order to save Amy and Rory, who are trapped on a crashing space liner, The Doctor must save the soul of a lonely miser.

As the New Year begins, a terrifying evil is stirring, from across the centuries of Earth's history; as the Doctor, Ryan, Graham and Yaz return home, they must try to overcome the threat to the planet.

Jemma is away on a business trip, and Leslie's off to a Doctor Who convention.