Two worlds collide

by velja

Fandom: Stargate SG-1/ Harry Potter crossover

Rating: PG-13 or maybe NC-17 (for some sexual situations)

Pairing: Jack/Daniel and Harry/Severus eventually (though past Harry/others and hints of possible Harry/Daniel as well)

Disclaimer: Stargate belongs to MGM & Co and HP belongs to J.K. Rowling & Co. I'm just borrowing them for fun.

Summary: "Years of experience had taught Jack that every time SG-1 stepped through the Stargate into a forest there'd be trouble ahead. So why should now be any different? It wasn't called the Forbidden Forest for nothing, you know."

See what happens when SG-1 encounters the wonderful world of Hogwarts.

Warnings: This contains slash (m/m sexual relationship), so if you don't like that sort of thing then don't read, okay?

Timeline: This is completely AU for both fandoms but let's just pretend that Stargate-wise everything up to the end of Season Eight happened (except that Carter didn't break things off with Pete. I really liked him and wanted them to marry... so in my story they are).

HP-wise this is AU as well, though some canon-events did take place, others not so much (certain character's deaths, obviously). Harry is in his mid-twenties and Voldemort was defeated by seventeen year old Harry.

Author's note: Okay, I've no idea what I'm doing here. I've never written Stargate fanfiction before and only a few HP stories so I'm not sure I kept everyone in character. And this is the first time I've tried throwing both fandoms together, so the result is probably… weird. I've read only a few crossovers so far and none of them satisfied me completely, so I decided to try one for myself.

Prologue

When his boots finally re-connected with a hard surface underneath General Jack O'Neill clutched both his hands onto his iron sidearm and tried to shake the sudden dizziness from his head.

Wow, how long had it been since he'd last made a trip through the Stargate? Nearly a year… the whole time Jack had been in command of the SGC he hadn't been able to go off-world. Not once!

Hadn't Daniel convinced him to take the command by pointing out that he'd be in charge and therefore be able to do whatever he wanted ("Within reason, sir," he could still hear Carter mutter)? Yeah, right… do whatever he wanted. There'd always been difficult decisions to make, endless meetings to attend… and not to forget the never-ending amount of boring paperwork he'd had to do. He'd been stuck behind his desk, seeing his team go off saving the world and having all the fun without him… that's what he got for listening to Daniel!

But no more.

As soon as the latest threat had been eliminated and the world had once more been saved (and hadn't they kicked those damn bugs' shiny asses big time?) and as soon as Daniel had been back from the dead for the umpteenth time (well, okay…descended again) Jack had handed in his resignation from command to the President himself.

And it had also been the President who'd talked him into re-joining SG-1 by pointing out the obvious: Jack O'Neill simply wasn't ready for retirement yet.

He wasn't the type to sit back and watch others do the work he loved to do for himself, no matter how battered his knees or back were, how gray his hair had gone … and definitely no matter that his birthday cake now had to be made XXL in order to fit the candles for all his years.

It didn't matter at all. The only thing that mattered to Jack were his teammates, his campers… his kids.

That's why he didn't have to think twice before accepting President Hayes' offer (or had it been an order? With the President it was always hard to tell… that man could make everything sound like an order).

So two weeks ago Jack had re-joined SG-1. And the smile that had enlightened Daniel's face at the news had been more than enough to compensate for the loss of Carter on the team.

Not that loosing her had been easy, mind you. But, well… even Jack understood that newly-wedd's deserved a bit of a honeymoon. And married women shouldn't have to go risk their lives off-world at all… scientific genius and Colonel or not.

Jack understood. But it would still be weird… SG-1 without Carter. A three-people team. Had it been like this for Sam, Daniel and Teal'c when he himself had been gone last year?

Well, they had coped with it, hadn't they?

'And that's what I'm gonna do, too,' Jack thought determined, 'as soon as this freaking dizziness gets out of my head.'

He couldn't remember having ever felt this lightheaded from Gate-traveling before. Nor the faint humming in his ears… like hearing a swarm of bees approaching in the distance.

Maybe it really had been too long since he'd last stepped through the Gate. He'd become unfamiliar to the whole side-effects.

"What's the sound? This humming?" Jack heard Daniel ask suddenly, "do you hear that, too?"

'Okay… not just side-effects then,' Jack thought to himself right before Teal'c answered:

"Indeed. I am also experiencing a strange humming in my head, DanielJackson."

"Jack?" Daniel turned towards his team leader, "Do you hear it, too?"

"What?" Jack shouted, trying to be heard above the humming, "I can't hear you with all the noise going on!"

"Never mind," Daniel sighed and rolled his eyes. Then he took a couple of steps from the Stargate and looked around.

Jack followed his example and quickly let his eyes sweep over their surroundings.

"Trees!" he exclaimed, "Rows and rows of giant dark trees!"

"Jack," Daniel turned towards him with a pleading look in his eyes, "don't start…"

"What, Daniel? What shouldn't I start?" Jack walked up to Daniel and went on with a smirk: "Shouldn't I start reminding you that for the past eight years every single time we stepped through the Gate and landed among rows and rows of trees we ended up either in prison, enslaved or ready to be shot on sight? Is that what I shouldn't start?"

"I believe that is what DanielJackson meant, O'Neill," Teal'c stated matter-of-factly from the side.

"I thought so," Jack grinned and scanned the surroundings once again.

"Jack," Daniel once again started.

"Daniel."

"Jack, I really don't know what your problem with trees is!" Daniel sighed and spread his arms wide.

Jack shook his head and motioned for the others to start following him along a small path that he'd discovered leading from the Stargate into the forest.

Small twigs snapped under Daniel's boots as they made their way through the thick undergrowth and more than once Jack turned around to the archeologist, an annoyed "hush" coming over his lips.

Daniel tried to be stealthy but… well, he wasn't military and despite all the experience in combat he'd gained over the years he would never be able to move as silently as the special OPS trained General Jack O'Neill or the skilled warrior that Teal'c was.

The dim light scarcely breaking through the thick roof of trees wasn't helping any. Daniel could barely make out Jack's broad back in front of him as he tried to follow closely.

The team had been walking for maybe fifteen minutes before the scenery finally started to change around them. Where the trees next to the Stargate had been gigantic dark pines they'd now changed into more friendly and lighter looking birch trees. It was still dark though, dark and silent (apart from the strange humming).

No birds could be heard, no squirrels or other forest animals had crossed their path so far.

Jack had noticed the unusual silence and it was making him uneasy. Something about this place just rubbed him the wrong way. He voiced his thoughts a moment later when he entered a small clearing with Daniel and Teal'c following closely.

"This is creepy," he said. "No sound apart from that awful humming… I don't like this."

"There're just a lot of trees, Jack!" Daniel sighed but he too felt some strange foreboding inside. He looked at the more-than-normal silent Teal'c but the Jaffa's face showed nothing but his usual calm indifference.

"After all, it's just a forest," Daniel tried to calm his own nerves with the words and he repeated once more: "Just a forest."

"It's the Forbidden Forest!" a cold voice suddenly said.

All three men rushed around at the sound and both Teal'c and Jack raised their weapons immediately towards the tall stranger that had spoken and who now emerged from behind one of the trees. He looked human, with long black hair, dark eyes and a hooked nose, and he was dressed completely in black, an oddly looking, old-fashioned coat slung around his bony shoulders.

The man held a small basket in one and some kind of twig in the other hand. And, so Jack noticed, he was pointing that twig directly at them.

'Like some kind of weapon. Not good. Do something, Jack.' He thought and opened his mouth to say the first thing on his mind:

"Ugh, did you say forbidden? Then what are you doing here?"

"Jack!" Daniel whispered urgently and took a step forward to stand right next to his team leader. The man noticed Daniel's movement and took a step forward himself. Now the twig was pointed directly at Daniel's chest but the man's eyes were still fixed on Jack. He waited silently for Jack to say something again but it was Daniel who took over:

"Ugh, we're sorry, we didn't know it was forbidden. We…"

"Who are you and what do you want?" the man interrupted harshly and his eyes snapped from Jack to Daniel.

"We're peaceful explorers from a planet called earth. Ugh, the… the Tauri? We came through the Chaapa'eye… to…"

The stranger made a few quick steps forward and was suddenly standing right in front of Daniel. He glared down his large nose and spat: "Stop that nonsense! Who do you want to fool with that babbling? What is the meaning of this?"

"Ugh, what?" Daniel stuttered just when Jack chimed in: "Hey, step back, you… overgrown bat! He's not kidding!"

"A planet called earth?" the man threw Daniel's words back in his face. "And where in the whole wide universe do you think you're now? The moon?"

"No, we're on P4-…. Something!" Jack shouted back.

"P4-X37," Daniel supplied quickly.

"Yeah, that. Thanks," Jack replied with a quick glance at his teammate. Then he eyed the stranger again and tried to remain calm when he explained: "Look, we don't know what this planet is called but… we came here simply to explore things and have a look around. Sorry if we walked on… on hallowed ground or something!"

The man seemed to have trouble suppressing a growl when he answered: "These are not some hallowed grounds. You've trespassed the school grounds. And…"

"School?" Daniel inquired suddenly interested.

"Yes."

"With children and teachers and all that?"

The man eyed Daniel suspiciously for a moment before he suddenly stepped back and sighed. Then he motioned for them to follow him and muttered: "I guess it would be best if I'd take you to see the Headmaster. Follow me!"

The last was barked out rather harshly and Jack was just about to reply something likely unkind when Daniel stopped him with a hand on his arm.

"Jack," he whispered, "maybe it would be best to just do what he said and talk to the Headmaster. Maybe he can tell us more about this planet."

"Enough with the planets already!" the black-clad man shouted. "You really think you've traveled to another planet?"

"Sure!" Jack replied as casual as possible in this situation.

"Wait," Daniel stopped dead in his tracks when he finally began to understand. "You mean we're still on earth?"

"Of course you are! Dunderheads! Now come on, I'll take you up to the castle."

"We're still on earth? But… that's impossible!" Daniel stuttered and started walking after the man. Jack followed closely after and Teal'c made the silent rear.

"We can't be still on earth." Daniel tried to explain it mostly to himself. "There are but two Stargates on earth and none of it is here… wherever here is… "

He quickened his pace to suit up to the stranger and addressed him cautiously: "Ugh… excuse me, but… where exactly are we?"

The man shot a glare at Daniel but when he didn't flinch away he sighed and answered curtly:

"Scotland."

"Scotland? As in… Britain?"

"Yes," the man smirked suddenly, "Scotland, UK… on EARTH! Sorry to disappoint but you haven't traveled through space." He let out a quiet snort at the thought and added with another dangerous glare: "Or… do I look like an alien to you?"

Daniel said nothing but fell back, silently contemplating the possibility of being still on earth. He barely heard Jack's muttered reply:

"Could have fooled me."

TBC

Please tell me what you think of it, okay?

I'll try to update as soon as I can but there's no more written right now so... it could take a while. And just so you know, I'm always open for suggestions as to who to include here and who to pair up with whom and so on.