Plot Summary: A force that the Doctor does not recognise, a force stronger than even the formidable energy of the TARDIS itself, pulls the Doctor and Donna into a strange new world where anything seems possible.

Author's Note: This is my first attempt at writing anything even remotely to do with Doctor Who. I have watched numerous episodes in an attempt to get the characters and information correct, but I apologise now if you find any inconsistencies. If you do, don't hesitate to point them out to me and I'll change it accordingly - I'd hate to think I was writing really out of character dialogue or really inaccurate science without knowing.. Anyway, I hope you enjoy the story and so, as the Doctor would say - "Allons-y!"

Prologue.

"I know – Hogwarts! You'll like Hogwarts, Donna, lots of moving portraits, huge rooms – and I mean huge; the last time I went there it was like it'd been fitted with a Drogilian Elongation Panel..." the Doctor trailed off for a moment as he smacked his hand onto a button seemingly at random before glancing up and grinning madly. "And the people, oh, there are loads of-"

Donna held up her hands. "Slow down for a minute, space boy. You mean to tell me that you're taking us to Hogwarts?"

"Oh yes."

"But...that has to be impossible, I mean, there's magic and dragons-"

The Doctor's eyes widened. "Oh, no, Donna-"

"-and talking hats," Donna continued slightly breathlessly, "and you, science freak of the galaxy-"

"Oi!"

"-are taking us there?"

"Well," the Doctor seemed very interested in studying the panel he was standing next to, "'there' in the sense that 'there' is...Orlando..."

Donna's smile dropped off her face. "Orlando? What about the real Hogwarts – oh wait, I have this one. It's not real."

"Don't be daft, of course it's real-"

Donna's mouth dropped open again.

"-but," the Doctor emphasised, "it's in a different reality, one where the universe is governed by magic and not science. I can't take us there."

"But you said – hang on, if you can't take us there, that means you've never been there, right? So how do you know it's real?"

The Doctor ran his hands through his hair. "Blimey, how do I explain this... let's just say that, combined with the general trend of alternate universes, the stories by JK Rowling serve as a pretty good indicator. So," he added quickly, before Donna could get a word in edgeways, "do you want to go or not?"

"To Orlando?"

"To Orlando."

"And not the real castle?"

"If I could get you there Donna, I would, but as it stands at the moment all we've got is the theme park... or the beach."

"Couldn't we do both?"

"Well, I suppose they could build a theme park on the beach next time you ask them-"

"Alright, alright! I'll just pick one, shall I?"

"Hogwarts?" the Doctor guessed, grinning.

"Hogwarts," Donna confirmed. "I'm not missing it for the world, especially when I can use it to make Mike jealous. He's a die hard Harry Potter fan – even though he's nearly fifty!"

"Nearly fifty and a Harry Potter fan...well, can't argue with that, it's a good fandom, very well written, and I'm nine hundred so it'd be a bit hypocritical to joke about it, but I don't think you should tell him."

"Why not?"

"There's always the question of how you managed to get there when you're supposed to still be in Chiswick."

"He doesn't have to believe me, I just have to tell him."

"Donna. It won't work. Trust me – I tried something similar once."

"Fine. And when?"

"When what?"

"When did you ever run away from mummy and daddy Time Lord on an illegal trip only to come back and boast about it?"

"What I do isn't illegal!"

"So all that psychic paper, computer hacking and getting chased by monsters while never actually paying for anything you 'buy' is government recommended, is it?"

"Alright, you do have a point, but not all of it is illegal."

"So go on then! What was the top secret trip?"

The Doctor sighed. "It involved the Krashonians and their famous Fudge Mountain – it's a bit of a long story so I'll tell you later."

"No way! You on a fudge mountain?" Donna repeated enthusiastically. "Oh, this is brilliant! What did you do, did you eat it?"

"No."

"Blow it up?"

"Blow it – why would I blow it up?"

"I don't know, maybe you fancied a snack and tried to blow a chunk off but ended up blowing it to pieces instead."

"I think I can safely say I never did that...hang on," the Doctor peered closely at a flashing red button, eyebrows furrowed, "what's going on here?"

"Or maybe," Donna continued, oblivious, "you tried to climb it and got stuck! Was that it, Doctor? Or-"

"I'm picking up an energy surge," the Doctor announced, flicking several switches, "and I don't know what's causing it."

"Is it serious?"

"It's threatening to drag us into a rip in the Time Vortex, Donna, yes, I'd say it's serious."

"What happens to us if that happens?" Donna demanded, watching as the Doctor ran around the control panel. "Doctor? What happens to us?"

The TARDIS juddered, a low groan sounding throughout the structure as the floor trembled and jerked beneath their feet.

"I don't know!" the Doctor shouted above the rising whine of the engines. "And I'd rather not find out, but whatever it is, it seems to want us pretty badly."

"What do we do?"

"Find a nice, strong handhold and just grab it – don't let go until we've stopped, no matter what happens."

"Doctor-"

"I'm going to try and fight the energy for as long as I can – just find a handhold, Donna, this is going to get very bumpy very quickly!"

"But-"

Sparks began to fly from the console, making the Doctor jump back to avoid getting burnt before he stumbled dangerously, forced to grab hold of another part of the panel, still struggling to pilot the TARDIS even as it careered wildly from side to side.

Part of the panel caught fire and the Doctor was forced once more to let go, just as the TARDIS tipped, dumping him heavily into the seats nearby.

"Doctor!"

"I'm alright!" the Doctor bellowed back, his voice barely audible over the almost deafening whining. "I can't fight it anymore, it's too strong!"

Still clinging to the seats, he turned to face her, eyes frantic, staring straight at her through the sparks. "I'm sorry, Donna, but we can't break free. It's got us."

AN: And that has to be the shortest intro that I've ever written :p Let me know what you think, even if what you think is that I got the facts hideously wrong!