The Doctor opened the door and walked in with Derpy and Captain Jack. They searched for Twilight and Spike. Derpy spotted her.

"Look, there's twilight on the second floor!" Derpy said.

"Ok, she's there on the second floor of the school library." The Doctor repeated.

"So where are we going to hide for the night?" Jack asked.

"We can't let her see us, shall we hide on the third floor?" The Doctor asked.

"Why third, why not stay on the first floor?" Derpy asked.

"The School history book's are on the third floor, I want to go see them and see if I can get any information about the history of this school, it might help us." The Doctor explained.

The Doctor, Derpy and Jack walked to the stair case and walked up the stairs.

"Remember, be very quiet, we are on the same floor as Twilight and we need to go up another flight of stair's." The Doctor explained.

"Where are the other flight of stair's?" Derpy asked.

"Over there on the other side of the room, just beside Twilight." Jack pointed out.

"Ooo, That's going to be tricky getting over there without her noticing us." The Doctor said.

"Don't worry, I will cause a distraction!" Derpy said.

Derpy ran over to the bookcase's and grabbed hold of a book. she got the book and threw it over to Twilight's side of the room, the book hit a pile of book's and knocking them over causing a loud noise.

"What was that?!" Twilight asked.

"I don't know, let's check it out." Spike said.

Twilight and Spike ran off to see what the noise was, leaving the other side of the room empty.

"Quick, she's gone!" Derpy shouted.

"Go, go, go!" Jack shouted.

Derpy, Jack and The Doctor ran from one side of the room to the other. The reached the other flight of stair's and climbed it to the third floor.

"We made it!" The Doctor said catching his breath.

"Everyone, be quiet! Twilight is back down stair's, she will be able to hear us if we make to much noise!" Jack said.

"Come on, let's go find those history book's, see if we can find anything about Canterlot high's history." The Doctor said.

The Doctor, Derpy and Jack made their way to the History isle of the school's library. They started to look through the book's. Jack started to ask question's again.

"So Derpy, Do you remember a few minute's ago when we we're talking about how The Doctor had lot's of companion's in this universe?" Jack asked.

"Yeah, of course I do. It was only a few minute's ago." Derpy answered.

"Well I just wanted to ask, are you The Doctor's companion in the other universe?" Jack asked.

"I guess so, we haven't been together long, only a month, but it has been the best month of my life." Derpy answered.

"What's you're favourite part about being with him?" Jack asked.

"The adventures and the running." Derpy answered.

"Mine to." Jack replied.

Jack picked up a book from the bookcase.

"Hang on, this one is a bit stuck." Jack said.

Suddenly the book became loose and jack flew back hitting Derpy. Derpy fell on a book shelf knocking it over. the book shelf started to knock over other book shelf's, one after the other. The chain reaction of falling book shelf's eventually stopped with a huge bang on the floor.

"Oh, what is it now?!" Twilight screamed at the top of her voice.

"Someone might be up there, Twilight." Spike said.

"Let's go check." Twilight said.

Twilight and Spike climbed the stair case to the third floor of the school library.

Who are you?!" Twilight shouted.

The Doctor, Derpy and Jack looked up.

"Hey, I know you, you look like those two ponies, Derpy and Doctor Whooves." Twilight said.

"You mean those strange ponies from Ponyville?" Spike asked.

"No, we don't look like them, we are them. You see Twilight, after you went through the portal to this universe, we followed to help you find the crown. And not only that, do you know when I showed up in Ponyville with that big blue box that I call a T.A.R.D.I.S? That's because I travel in that box, and to make it even more weird, I was originally from this universe. Something went wrong with the T.A.R.D.I.S and I ended up in your universe, I was going to leave that universe, but after I helped defeat Nightmare Moon, I decided to stay. Now yesterday, I was flying by and an energy source disrupted the T.A.R.D.I.S controls, making me crash land and I found out it was because of Sunset Shimmer stealing your crown." The Doctor explained.

"And that's the Derpy from our universe too?" Twilight asked.

"Yep!" Derpy said with a cheesy smile.

"We would of told you we followed you but I was worried you might get a bit confused. Sorry." The Doctor said.

"No, it's fine, I understand. But you say you are originally from this universe and you didn't come to our universe through the portal. You say you travelled to our universe in a box you call a T.A.R.D.I.S and that only happened by accident?" Twilight asked.

"Yes." The Doctor answered.

"I was wondering, can my friends and I see the T.A.R.D.I.S? " Twilight asked.

"I'm in a good mood so why not." The Doctor answered.

"Thank you, Doctor, but you do know I will need to tell Princess Celestia about who you really are. She will be angry and might tell you to go back to your original universe, but I will ask if you can stay!" Twilight explained.

"Thanks' Twilight. Oh, and have you met Captain Jack Harkness yet?" The Doctor asked.

Twilight and Jack shook hand's.

"Nice to meet you at last Princess Twilight." Jack said.

"It's just Twilight. Are you from Equestria too?" Twilight asked.

"No, I'm not. Back when The Doctor lived in this universe, I used to travel with him in the T.A.R.D.I.S." Jack explained.

"Maybe you could come with us one time, Twilight!" The Doctor suggested.

"I would love to, Doctor! Derpy, Jack, you've both travelled with The Doctor, what's it like?" Twilight asked.

"Brilliant!" Jack shouted.

"Best time of my life!" Derpy screamed.

"You could bring you're friend's along to, Twilight!" The Doctor said.

"They would love it! But back to basic's, you said you're here to help me find my crown. So, what's the plan?" Twilight asked.