The Doctor Derpy and Family: Episode 3: Gallopfrey

The Doctor, trotted into the throne room with his three companions, "Greetings princesses. No need to worry The Doctor is here." He looked around to see that the Princesses were no where to be seen. "Well phooey! All that pomp and circumstance for nothing?" The Doctor looked around for a bit, then he went up to Celestia's throne and sat in it. He looked down the center hallway, then he noticed something in the design of the room. There were stain glass windows on either side of the hallway, except one side had one less than the other. He had never noticed it before, it was at the very end of the hallway and there were red curtains drawn in front of the space where the window should have been.

The Doctor trotted down from the throne, and headed towards the curtains. He blinked. Suddenly he forgot where he was heading.

"Um, Doctor...What are you doing?" asked Derpy confused.

"I don't know." replied The Doctor. "Waiting for the princesses I guess." he said pacing toward the back of the throne room.

"Well you have a weird way of doing it." Amethyst remarked snootily.

"Amethyst, don't be rude!" Derpy scolded. "Where could they be Doctor?" she asked.

"I don't know." replied The Doctor, his eyes drawn to the corner of the room.

Amethyst turned her head to look behind her, "What? What!? What are you looking at? You're making me paranoid, is there some sort of invisible monster behind me?"

"No it's not that. It's just-" The Doctor started.

"Just what!? Doctor!?" Amethyst said fuming.

"Nothing...geez why so angry all of the sudden?" The Doctor said concerned, pulling out his sonic screwdriver.

"Get that thing away from me Doctor!" Amethyst raged, "If that even is your real name. Doctor! Doctor Wh-"

She was cut off when the Doctor started using his sonic screwdriver. The blue buzzing piece of metal started straying right and left, up and down, looking for something suspicious about the corner of the room. He looked at the screwdriver, "Nothing." he said distraught.

"It's just a blank wall." Amethyst said frustrated.

"Muffin, what's gotten into you?" Derpy asked.

Amethyst opened her mouth to talk when Dinky interrupted, "What about that curtain?"

"What?" Amethyst asked confused.

"You said 'It's just a blank wall' but what about that curtain over it?" the little unicorn asked.

The three adult ponies looked at each other, looked at little Dinky, and then drew their attention to the wall. Sure enough there was a curtain there. How had he not noticed that sooner, the Doctor wondered. "Let's find out what's behind it." said the Doctor. he gripped the rope in his mouth and yanked the curtain open. Behind it was a large stained glass window, like the others around the room. It showed an orange circle amid the dark night sky, and around it there seemed to be little...squares trailed by streaks of yellow. "No...th-this can't be! It can't!" the Doctor immediately started racing away.

"What Doctor?" Derpy asked flying after him.

Amethyst and Dinky ran after them.

"Firstly what the hay was up with that wall?" Asked Amethyst, "Why couldn't any of us see the curtain except for Dinky"

"It was a perception filter, you can only see what whomever set it up wants you to see, it can even trick a Timelord." he paused while continuing to run towards the TARDIS. "As for why it didn't trick Dinky...I don't know." He kept running.

"Doctor!" Amethyst screeched, "Wait! Look at this! What is it Doctor!?"

The Doctor stopped running, he turned around to look at what Amethyst was talking about. He looked in shock and horror after following Amethyst's gaze over to Dinky's flank which was no longer blank. Her newly appeared cutie mark was a bunch of circles, dots, and lines all inside a larger circle.

"What is it Doctor?" Derpy asked concerned.

"We need to get back to the TARDIS!" The Doctor said.