[[quoteright:320:https://static.tvtropes.org/pmwiki/pub/images/Derpy_and_the_Doctor_4303.jpg]]
[[caption-width-right:320:[[Series/DoctorWho The Doctor]] and his lovely assistant, sharing a moment.]]

The mysterious Doctor Whoof and his wonky-eyed companion have vanquished the Dalek-Cybermen Alliance and saved the citizens of Ponyville from the wrath of their evil plot! But, as Ponyville rebuilds, ponykind finds itself under attack. Never before seen creatures are bleeding through from the darkness, their origins unknown and their intent indecipherable.

The Doctor and his companion have disappeared, and ponykind, scarred by war, must defend itself. From the ashes of that dark conflict a new order has arisen, tasked with protecting the future. Torchwood: outside the Monarchy, beyond the Royal Guard. Equestria's fate hangs in the balance.

This fic was one of the first, and certainly is one of the most popular, Doctor Whooves and Derpy ship fics to ever be written. In true Doctor Who fashion, it features extra-terrestrial invasion, time travel, and a Torchwood offshoot.

The fiction may be found [[http://www.equestriadaily.com/2011/02/story-my-little-time-lord.html here.]]
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!!This WesternAnimation/MyLittlePonyFriendshipIsMagic FanFic provides examples of these tropes:

* DeadFic: The last update was the December of 2011. While the author did promise of an update sometime before the end of January 2012, there has not been any activity since 18 January 2012.
%%* DeathRay: The Daleks just wouldn't really be complete without them.
* FandomNod: At one point, Ditzy sees a younger version of herself and calls her younger self Dinky, and seems convinced she is hers and the Doctor's daughter.
* FateWorseThanDeath: When [[spoiler:Twilight Sparkle]] takes over Equestria, she banishes [[spoiler:Princess Celestia]] to the sun. As the spell automatically wears off every millennia, she has to be re-banished every thousand years. The Doctor arrives at the millennial anniversary of the event, just as she came back burning and screaming, and is threatened to be banished with her if he does not cooperate. Keep in mind, she's immortal and had to suffer many thousands of years of agony burning in the sun.
* MayflyDecemberRomance: Pinkie comments that the Doctor may be a little too old for Ditzy. Since the Doctor is consistently stating his age to be over 900 years by this point, it's quite the understatement.
* ShipperOnDeck: Pinkie seems to think Doctor and Ditzy would make a great couple, while Dash presumes they were already dating, much to Ditzy's embarrassment.
* SpinOff: Just like in the TV Show, Torchwood is established to combat any future alien attacks.
* WordSaladHorror: Ditzy is quite prone to this due to her ''condition''.
-->'''Ditzy:''' The upside down metal wastebaskets, they're here, they're going to kill us all.