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 TARDIS arrives on a Minyan space craft, the R1C, commanded by a man named Jackson. Jackson and his crew are on a long quest to recover the Minyan race banks from a ship called the P7E which left their planet centuries ago. The Doctor helps to free the R1C after it becomes buried in a meteorite storm, but it then crashes into another newly-formed planet.

The Doctor regenerates.

The Rani plots mass destruction.

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

The Doctor makes a final stand against an army of Cybermen in order to protect humans from destruction.

The planet of Tara holds the fourth segment of the Key as a statue, and the Doctor becomes involved in the feud that exists between Count Grendel and Prince Reynart.

The Doctor encounters the first human colony on Mars, Bowie Base One.

When the TARDIS lands in the swamp lands, the monstrous Kroll, who swallowed the fifth segment centuries before, rises from the depths. In order to revert Kroll to its natural form, the Doctor must get the key tracer near him before it's too late.

The Doctor and company drop in on a planet in the midst of an interplanetary war.

The Doctor tries to save the lives of the passengers on an orbiting cruise ship called Titanic.