My personality is not the sort that fictional characters are modeled after.

Not good ones at least.

I am a Bella Swan in a world of Ethan Hunts, Sherlocks and Captain Americas. I live a completely ordinary life, in an ordinary town, and I work at an ordinary job.

That is, I did until the Doctor showed up. He showed up and he made my life something exciting.

"Come on, Ari. We've got an adventure today!" the Doctor said, leaning out of the TARDIS which was currently parked in my living room. He had a wicked smile plastered across his face, instead of his normal grumpy expression.

"Alright, future or past?" I asked, tugging on my old grey beanie and stepping into the old time machine. "Cause I don't fancy running into vikings again."

"Oh, don't worry, we're going to the future. I've got a distress call from a spaceship somewhere around 2264. By this time, humans have discovered warp travel, and are able to cross the galaxy in less than an hour."

Huh. Sounded cool. "Any idea what this ship is called? Or where in the galaxy it's gonna be?"

"Nope. Not in the slightest." He flipped a switch on the TARDIS console and the ancient systems whirred to life. Nothing in the universe ever made that sound, except the TARDIS. I loved that noise.

Without warning, the TARDIS rocked under my feet, sending me and the Doctor to the floor.

"What the hell is going on?!" I shouted.

The Doctor pulled himself to his feet and stared at the TARDIS's monitor. "The TARDIS doesn't like where we're going. Something is wrong with the timestreams, as if… no." The Doctor paled. "As if someone's created a second timeline. Rewritten history. That shouldn't be possible."

The TARDIS suddenly stopped rocking, and went silent.

"Are we here?" I asked.

"Yeah. But we'd better be careful. If an alternate timeline has been created, then reality may be highly unstable."

I nodded, and picked myself up off the floor.

The Doctor opened the TARDIS door and peeked his head out. "Seems normal," he muttered. "We seem to have landed in the engine room. Not a soul in sight."

I walked over and pushed past the Doctor, looking around at the shiny chrome of the new ship.

"This color scheme is really familiar," I said.

"Well, yeah," the Doctor said, rolling his eyes. "You grew up on science fiction stories and movies. Spaceships aren't going to look as alien to you as they would to, say, someone from the nineteen-twenties."

"Sure. Makes sense. Now how do we get out of here?"

"Erm...here." The Doctor ran over to what looked like a TV screen and pulled out a pair of sunglasses.

"Really? Sunglasses?"

"They're sonic," the Doctor explained. He put them on and pressed a hidden button. The sunglasses buzzed like his screwdriver used to.

"Why the change?" I asked.

"Eh. Got a new style."

"Is that why there's a guitar in the TARDIS now, too?"

"Something like that. Aha!" The monitor lit up, showing a map of the ship.

I stared, taking in all the information "No...is that-"

"Okay, so there's a staircase to our right...no, left. Go up there and it should take us to what looks like the med bay-"

"Doctor, do you recognize this ship?"

He stared at me, confused. "No. Why? Do you?"

"I think so."

The Doctor scowled. "That's not possible. This ship is centuries after your time-"

"I know, I know, but… I've seen this design before. Something from an old movie. Well, I say old. It was about 2009, maybe 2010 when it came out."

Somewhere above us, an intercom beeped. "May I have your attention, please. At 2200 hours, telemetry detected at an anomaly in the neutral zone. What appeared to be a lightning storm in space. Soon after, Starfleet received a distress signal from Vulcan High Command-"

"Holy hell," I breathed, and took off sprinting towards the stairs.

"Ari, wait!" the Doctor shouted.

I ignored him and ran upstairs, and found myself in horribly familiar white hallways. The spotless black floor reflected each person who walked on it, making copies of the red, yellow, and blue uniform shirts and dresses. A few people had to jump out of the way as I careened past, the Doctor close behind me.

"Ari, we can't just go running around the ship without knowing what's going on!" the Doctor called after me as I reached a lift and began furiously pressing the button.

"Doctor, I know what's going on! I know what's gonna happen and I gotta stop it."

"What are you talking about?"

"This ship. I know this ship, I know that voice over the intercom, I know these uniforms and the pins on their chests, and I know these hallways. It's the USS Enterprise."

"How could you possibly know that?"

The lift opened up and I jumped inside. "Are you coming with me?" I asked. The Doctor grumbled something about this is ridiculous and stepped into the lift just before the doors closed.

"That movie I was talking about? It's called 'Star Trek.' This ship is in it. So is everyone on it. That guy over the intercom was named Ensign Pavel Andreivich Chekov."

"So there just happens to be a movie in your time that matches the events of the future?" the Doctor asked, incredulous. "How is that possible? No, it isn't possible. Are you absolutely sure that's where we are?"

"Positive. Chekov was talking about a lightning storm in space near a planet called Vulcan. There's only one thing that could cause that. Only one ship, and the Enterprise is headed towards an ambush." I tapped my foot impatiently. The lift was taking so long.

"Ari, listen to me: If you change events, if you tell the people on this ship what's going to happen, you're just going to further destroy the integrity of the time streams."

I glared at the Doctor, and he grabbed my wrist as the lift door opened.

"Don't do anything stupid," he warned.

I yanked my wrist back and walked confidently towards the bridge.