So, this idea came from my older (and only) sister. She challenged me to write a fanfic based on what were to happen if my character me the Doctor before, but then she meets him again, but he regenerated, so she's meeting a different Doctor. So, I give to you this fanfic. The title also came from my sister because I couldn't think of a title.

Disclaimer: I don't own doctor who or any of the characters except the ones I've created. If I did, we would not have to wait until next spring to get a new season.

When I was 15, something happened to me that completely changed the way I saw the world. Long story short, it involved my twin sister, Mandy, being captured by a group of power hungry aliens hell-bent on using the "perfect" twin from a pair of twins to mate with one alien of their species so they could have the perfect race, and a man who was determined to stop these aliens from doing anything to my sister or the other teenagers. How did he know they were aliens, you might ask? Well you see, he was an alien himself. The last of his species, in fact. He was a Time Lord from the planet of Gallifrey. He called himself the Doctor and his planet had been destroyed in a war against a species called the Daleks. He'd gone undercover as a new History teacher from England at my American high school to figure out what they were doing. Even before I knew he was an alien, I thought he was a bit eccentric, with his slightly gelled hair, brown pinstriped suit with beige converses and the way he spoke.

Now, how did I get involved in all of this? I just happened to be cornered by one of these aliens and almost killed before the Doctor rescued me. That was the day. The day that I found out that there were creatures from other planets who were threatening this planet and this man, who wasn't actually a teacher, but an alien, was the one who kept saving it. Needless to say, it was a lot to take in. Especially the fact that his spaceship that he called the TARDIS was disguised as a blue police box and it was literally bigger on the inside. After he saved everyone, he left and I never saw him again. However, 10 years later, it started happening all over again and once again, I was in the middle of it. Except this time, I was a teacher...and the Doctor looked a little different than what I remembered.

One day earlier

"Okay guys, it's time to settle down now. We have a lot to cover today that's going to be on the test tomorrow." I said, waiting for the chattering freshman I was teaching English to finish sitting down. I waited for them to settle down like they normally did, but they were still talking away. I tried to talk above them, but that wasn't working. Finally, I decided to pull out the big guns.

"Ok, if you guys don't be quiet right now, I'm giving you all F's on your tests tomorrow, and I know you wouldn't want that." I said in a voice full of steel, giving them my best stern teacher look, which seemed to work because they quieted down. "Thank you." I said, "Now why are you all so chatty?"

"It's because of the new history teacher." One of the girls, Ashley piped up.

I'd heard that there was a new history teacher for one of the history classes, but I hadn't had a chance to meet him yet. The former history teacher, Mr. Zane, had apparently inherited a whole bunch of money from a dead aunt and decided to retire early. That still didn't explain why the students were this chatty. They rarely got excited over a new teacher. So, against my better judgement, I decided to ask what exactly was so special.

"Ok, guys. Why exactly is this new teacher so special?" I said. Immediately, everyone spoke up. I held up my hand to stop all of them. "Ok, one at a time." I said. I pointed to Ashley, who had her hand raised. "Ok, Ashley. Tell me what's so special about this new teacher. And do it in a timely manner because I still need to cover what's going to be on the test."

"Well for one thing. Mr. Smith is British." Ashley started. "And he just seems really excited about history. Like the way he talks about things makes it like he was there. And he dresses really weirdly. He wear a bow tie. And suspenders."

As she was talking about Mr. Smith, I kept getting flashbacks from 10 years ago. When the Doctor showed up undercover. He was the same way. But, I knew that it couldn't be the same man since the Doctor didn't wear bow ties. I shook myself out of my reverie and looked up to see my students staring at me. They probably thought I was nuts at this point.

"Right." I said. "Anyways, let's get on with what's going to be on the test. And I want you all to write these down. Starting with what Shakespeare sonnets are going to be on there."

The rest of the class went fairly smoothly as I covered the material on the test the next day. I continued until the end of the day announcements came on and the students walked out of the classroom, still chattering. I sighed with relief and sat down at my desk, getting all my papers and books in order and placing them in my messenger bag, careful not to hit my laptop. I grabbed my purse and phone and walked out of the room, locking the door. I turned around to leave and knocked into someone, falling on the floor in the process.

"Sorry about that. Are you alright?" A concerned voice asked me as they put out a hand to help me up."

"Yeah. I'm fine. No need to worry about me." I said, taking the hand and pulling myself up.

I got myself to a standing position and finally got a look at the owner of the voice. He had slightly floppy brown hair and hazel eyes and was dressed oddly. He was wearing a tweed jacket over a white button down shirt and had short, black jeans with boots. Judging by the bow tie and suspenders that he also had on, I assumed that this was Mr. Smith. But, there was something else about him. Something that seemed so familiar, but I couldn't place it. He was also looking at me like he knew me somehow, but that didn't make any sense to me since I knew I'd never met him in my life. Or, so I thought. After a few seconds of awkward silence, Mr. Smith broke it.

"Oh right! Sorry, I should introduce myself. John Smith." He said, holding out his hand to shake.

"Ellie Jacobs." I said, shaking his hand. "I teach English. You're the new history teacher, right?"

"Yup!" He said cheerfully. "Fascinating subject, really. How did you know I was the new teacher?" He asked curiously. But I could have sworn that I heard a bit of excitement in his voice.

"Well, because I've never seen you here before and the students were talking about you in class. The bow tie kind of gave it away." I said, grinning.

"'Course it did." Mr. Smith said. "That's why I wear it. Bow ties are cool, you know?"

"Um, right." I said, trying to hide a snort. I looked down at my phone and noticed the time. "I should go now, but it was good to meet you. I guess I'll see you around." I said.

"Bye!" He said cheerfully.

I waved as I walked down the steps. I waved at a few of the other teachers as I walked outside to the facility parking lot. I located my car, neglecting to see the TARDIS parked right across from it, and got in, driving to the apartment complex where I lived with my sister. As soon as I got in, I set my bag down on a chair and changed into sweats and an old t-shirt. When Mandy came in, she found me making spaghetti and meatballs and drinking from a glass of wine.

"Long day?" She asked as she shrugged out of her lab coat. She was a biologist at one of the labs, which made total since why she wanted to become a biologist after what happened to her 10 years ago.

"More like a weird day." I said, mixing up the salad. "Go change and I'll tell you about it. She went to her room and came back just as I was putting the salad on the table.

"Ok, go." She said, as we sat down.

"Well, there's a new history teacher." I said, and told her about what happened.

"Wait, you mean there's a smith there again?" She asked, almost spitting out her water. "Is he-?"

"No. It's not the Doctor." Or at least I don't think it is. This guy looks a lot different. Plus, he wears a bow tie."

"Are you sure it's not him? If you recall, the Doctor was eccentric and this guy seems eccentric by what you're telling me." She asked.

"It can't be the same guy. I mean, I know the Doctor's an alien, but I don't think he'd be able to change his entire body." I replied. Clearly, at the time I had no idea how wrong I was.

"You probably have a point. Now, let's eat. I'm starving." Mandy said, digging in.

After we finished eating, I got out my laptop and tweaked the tests before printing a copy out, so I could copy them at school the next day. I was expecting tomorrow to go better than today, but I was grasping at straws. I wasn't aware that tomorrow was going to be the day that my past was going to come back.