Starlight Glimmer is about to get her revenge on Twilight and her friends, she just has to stop that cyan pegasus from doing her rainbow trick. But before doing so, she receives a visit from a Doctor.
Dismayed by her continued inability to fly, Scootaloo seeks answers from her aunts. She winds up in ancient Pegasopolis, where an old school foe of the Doctor is poised to unleash chaos on the world.
Rumble hates winter. It reminds him of everything he's lost. So when the Doctor takes him back to visit a Frost Faire, he's less than happy. Things only get worse when murder enters into the matter. Will this Hearth's Warming be Rumble's last?
When Colgate, Ponyville's premier and only dentist, has a crisis of identity, she is swept up on a mad run through space, time, and beyond. Meanwhile, Sunset and a Trixie have borrowed the TARDIS.
The Doctor is popping back to Earth, and he's taking his friends and family along for the ride. When the TARDIS stalls in the middle of the vortex, though, old foes arise and threaten everypony on the ship.
A pair of time travelers look to the future in order to improve their present, but there are some problems Minuette can't solve with magic and science.
When the Tardis lands unexpectedly in Canterlot the bumpy landing leaves the Doctors Companion Octavia in the lurch when it takes off again whisking the Doctor across time and space without her...
When the Tardis lands unexpectedly in the middle of the newly built Canterlot Opera House, the Doctor finds himself caught between a mare and a monster as he delves into the secrets hidden backstage...
Omega has crossed Gaea with Earth, creating an unstable planet, and only the Doctor can stop it. But, this time, it will take two sets of elements of harmony, as well as a second Doctor.
Upon returning to Canterlot High after a trip to New York, the TARDIS gets trapped in a temporal schism, causing it to bounce between multiple time periods. With The Doctor trapped in 1991, he must communicate with Twilight over the years.
The Doctor is back, and he must stop a Zygon disease from killing everyone on Earth. With Twilight Sparkle, and Sunset Shimmer at his side, the Doctor has just thiry-six hours before the disease kills him, and everyone on the planet.
Inadvertently entrusted with the secret that Cadance is having a baby, Pinkie nevertheless blabs. Realizing her mistake and trying to fix it, she unconsciously breaks the laws of physics without a clue to the damage to time continuum she's caused.
I am renowned for breaking things, but apparently breaking a broken time machine can fix it. With Doc as a reluctant guide into observational science, I was about to learn the meaning of life, my life.
Would you trade your current life for power? I did. Telekinesis/pyrokinesis are both nice things (unless you set your bed on fire while sleeping). Now we are stuck in Equestria. By 'we' I mean Silver and Blaze. Okay... where did I put these Emeralds?
When Luna was a filly, she had a series of nightmares that made her too terrified to go to sleep. So help arrives from a blue box from a staillon who calls himself "Doctor" along with a pony who she once thought was imaginary.