Preface
This story draws some inspiration for the frankly marvellous tale 'Do Daleks Dream of Electric Cake?'. I heartily recommend you check it out as it is, whilst as of yet unfinished, a cracking tale with a good blend of wit, charm and DALEKS! I decided to mention this because whilst my story differs in many ways from DDDOEC it shares a similar premise and was indeed inspired by it.
This story also draws many plot points and characters from Big Finish's Dark Eyes Doctor Who audio series. Since Big Finish are not particularly well known, I have decided to give a basic biography for some of the characters and set the scene if the reader hasn't heard the audios and doesn't want to check out the Doctor Who Wiki (not saying that's necessarily bad, everyone has their own opinions).
Characters:
The Dalek Time Controller
Genetically engineered to understand and observe the complexities of the web of time, this Dalek strategist was relatively sane until his fateful mission to the Amethyst Viral Containment Station. When the Station was destroyed in a temporal explosion the Time Controller spent a near-eternity watching all of history, and went insane. Following his return to normal space and a stint stuck on 22nd Century Earth, the Time Controller teamed up with former Time Lord Kotris to wipe out the Time Lords with Retrogenitor Particles.
Thanks to the interference of the Doctor, Kotris' former incarnation, Straxus, died and thus everything the Time Controller had done with him ceased to exist. Now returned to his Dalek Empire, the Time Controller examines the changes in time caused by Straxus' death, intending to use them for his own purposes…
The Master
The Doctors arch nemesis, this renegade Time Lord was resurrected by the secretive Gallifreyan Celestial Intervention Agency (CIA*) to become their most ruthless agent. Under heavy watch by the CIA however, he is more lenient to the web of time than he has ever been, and so takes changes in history far more seriously…
Alex Macqueen played this incarnation of the Master. He is tall, bald and tends to dress in bland business suits.
I would assume anybody reading this knows who GLaDOS and Wheatley are, as they are far more prominent characters in their franchise than the Time Controller and this particular incarnation of the Master.
The Scene:
The Doctors meddling with the Time Controllers plans on the planet Shrangor resulted in Kotris never existing. This has had a great impact, as Kotris' actions had side effects that were fundamental to the history of the universe, and now those side effects don't exist. Not only that, but Time is now very unstable, and even the slightest tampering in history could set off the instability to create a temporal maelstrom.
*The CIA is not a poke from me at the American organization of the same name. It is a legitimate part of the Doctor Who continuity.