A/N: Hey guys, I decided to write a new story since I had the idea. I haven't really read a story where a new companion goes along with Rose who isn't a time lady or related to Rose or knows the Doctor Who show. So I decided to write one, And I know that the backstory is vague, that's on purpose. You'll learn more as the Doctor does. Please read and review. Enjoy!

I do not own Doctor Who or anything else besides my OC. If I did I wouldn't be here right now. :)

Her life had been a simple one. She grew up as the only girl in her family, after her mother had died. Her father and three older brothers had loved her unconditionally. They had a small home and not very much money, but they were content. The accident happened when she was twenty. It was a normal day for the family. They had left for the day to work, and she was left at home since the mines wouldn't hire girls. This had never really bothered her, because being alone gave her time to learn. She knew she wasn't supposed to be reading her brothers old school books, but she did in hopes to learn everything that she could. She was settling down with a science book when the door burst open. Thinking it was her father she went to greet him, but what she saw wasn't her father. In the doorway stood two men, and before she could think to scream they grabbed her, injecting her with something before she passed out. The empty house would be the scene that three brothers and their father returned to. They tried looking, but no clues were left behind. All they could do was pray for her safe return.

The next five years passed with pain. She had almost forgotten her name completely. She could vaguely recall that it started with a J. Life became blurry and she couldn't tell what was happening most days. That is, until one day where her focus was clear. She was alone in the same room she had woken up in all those years ago. It was rather clear that this was a good time to make an escape, so she did just that. There were guards patrolling the building but she was able to sneak by without getting caught. She never realized this, but she was extremely lucky that she wasn't supposed to be awake, otherwise she never would've made it out. When she made it out she picked a direction and ran. Her feet were bloody when she found a train station. She couldn't afford a ticket, but she did manage to take a map off of somebody. And she walked, and walked, and walked all the way home. When she saw her house she collapsed in relief and started crying. Her father saw her and ran out of the house screaming, "Jessa!" She nodded, now sobbing. Her father brought her inside and soothed her until she fell asleep.

The next day Jessa cleaned herself up, and her brothers, all of them now married, came home and there was a reunion. She wouldn't tell them what had happened, and they understood. There were only a few differences about her, she was more reserved than before and new people scared her. Her physical appearance hadn't changed at all except her brown hair being a little longer, and her once brown eyes were now a deep violet. Other than those things, it was like she never left. Life continued and for the next few years everybody was happy. However, it soon became apparent that Jessa wasn't growing older. There were no signs that she had even aged a day. This worried everybody, but passed it off as nothing until ten years later she still looked the same. It was hard for her to grasp the concept of never aging, and when she did, she locked herself in her room for days refusing to come out. She wouldn't grow and die with her family like she had planned. She would instead have to watch as they grew and she didn't.

It was with great pain and sadness that she watched her father grow into an old man and pass away. Next came her brothers, and they each held her hand as they went, telling her not to give up and to live a happy life however long it may be. But she couldn't, her family was dead. Her family line continued through her brothers, but she never introduced herself to them, not able to go through the pain of losing them. She sat in silence watching from afar for the next centuries.

One day, she was doing just that when a bright light blinded her. She cried out in pain and when she opened her eyes, she saw a place that was not her own. There were similarities to her home, but there were also major differences. She tapped on the shoulder of the person next to her and asked, "Excuse me? Could you tell me where I am perhaps?" The man turned around and in an accent that she hadn't heard before replied, "Why it's Chicago of course!"

She shook her head, having never heard of such a place, but replied anyways, "Of course. And what year is it?"

The man looked at her in concern. "1939, are you sure you're ok?"

"Yeah, just forgot for a minute, thanks." She hurried off down the crowded street, and to the nearest library.

Unable to cope with her situation she read. It was her ultimate comfort. She learned that this place was in fact Earth, just not her Earth. It would explain why they spoke the same language, and that was what made it easier to accept what had happened even if she wasn't too sure herself. She got herself a job at that very same library, and an apartment down the street. It would be rare to see her without a book. She learned of this Earth's history and customs first, and after a few months you wouldn't be able to tell she was a foreigner. Next she learned what you would at school, this didn't take her long since it wasn't very different from her brother's schoolbooks. Then she read anything and everything she could get. After three years she moved, so people wouldn't get suspicious of her not aging. She stayed in the United States only for about 15 years before she traveled the world. She learned the languages and tried the food. In public she was kind and polite, but never getting attached. She wouldn't be able to stand the heartbreak. By 1980 she had been everywhere and could fluently speak just about anything. Her skills in science and math were unparalleled. History was top notch. Literature and cooking however, were not her thing. She dabbled in both but neither was something she could be an expert in. She had just moved to London in the flat under Rose Tyler when she met the Doctor.

-9-

The Tyler's were nice enough people Jessa decided. She had a few conversations with them and they were average. That was fine with Jessa, would help her not get attached. She was just sitting down with a book when a crash from above startled her. Concerned about the noise she went upstairs to ask if they were ok. She brought her hand up to knock when the door swung open and a man wearing a leather jacket came jogging out without looking and bumped into her. He looked at her, "And who're you?"

"Name's Jessa, I just came up to see what that crash was. I think it's safe to assume that you had something to do with it by the way you were just running?" She raised her eyebrow at him.

'Oh I like her' he thought, and he grinned. "Yep perfectly sound assumption, now do excuse me Jessa I must be taking my leave." Shooting her a last wave he took off down the stairs. A voice from the stairway made him turn around.

"Hold on a minute, you just can't go swanning off." The Doctor rolled his eyes at Rose.

"Yes I can. Here I am, this is me, swanning off. See ya!" Rose shook her head, "That arm was moving. It tried to kill me!"

Jessa was now interested. She had been standing thinking she was in the middle of the most awkward moment of her life between a couple, but maybe there was something to this. Either Rose was mad, or something intriguing was going on. It had been a while since she had a good mystery. She studied the man who never gave his name, and asked. "Moving arm?"

The Doctor was about to groan at having another one asking him questions when he saw her. Her brown hair went down to the middle of her back. She was wearing jeans tucked into black boots, and a long black sweater. And her eyes. Either she was wearing contacts or had the most unnatural eyes that a human could have. That shade of violet doesn't exist naturally. That wasn't what made him pause though, it was her stare. It wasn't really cold but calculating, like she could decipher his secrets by looking. He wasn't going to test this theory and waved again, "Yep, now I have to go." And with that he turned around and was down the stairs before either could blink.

Both girls followed him, but this time it was Rose who spoke. "Alright then, I'll go to the police. I'll tell everyone, you said if I did that I'd get people killed. So you're choice. Tell me ore I'll start talking."

Jessa rolled her eyes, "Really you're going to threaten to kill people if he doesn't answer your questions? Was that supposed to sound tough?"

"Sort of."

The Doctor cut in, "Doesn't work."

Rose ignored us both and looked over at the Doctor, "Who are you?"

"I told you! The Doctor." Now it was Jessa's turn to cut in.

"And what was that about moving arms?"

"It's called living plastic, moved by thought control."

"Okay." Jessa turned around and walked off. The Doctor stared at her in surprise.

"That's it?"

"Yeah, I wanted your name and what that was about moving arms. I found out and now I'm good. You obviously don't want to answer my questions, and who am I to make you? I have no claim to demand answers so I'll be on my way." This time she did turn around and she walked back up the stairs. The Doctor was shocked to say the least. Nobody had done that before. He turned around, not even registering Rose yelling at him. He stepped into the TARDIS, and flew away. Rose looked rather put out and stormed up the stairs. She had research to do.

-9-

Jessa went back into her apartment and thought about what she had learned. The Doctor was interesting, his eyes were older than he was. She knew this because she saw the same thing when she looked in the mirror. What he said made sense, it was obviously something alien. She wasn't naïve enough to think that the Earth was alone in the universe. Researching aliens and space had become sort of a past time for her. The Doctor's name came up sometimes, and she had a feeling that this was the same man. Content with her findings she sat down and read the book she picked out earlier.

A few hours later she got hungry, and decided that there was nothing in her flat that sounded good. She decided to go to one of her favorite pizza places. When she arrived, she sat down and pulled out her menu. A familiar voice filled the shop as the voice opened once more. Jessa sighed, it wasn't that she didn't like Rose but the girl felt like she was entitled to all of the answers. 'Ah well, she'll grow out of it with age.' Rose walked over to her table and sat down without asking. Jessa immediately noticed that the boy Rose was with was not a boy, but rather plastic. 'This must be what the Doctor was referring to.'

Rose, seeing she was being ignored on all her questions to Jessa, turned to Mickey. "Do you think I should try the hospital? Suki said they had a few jobs going in the canteen. That's it then…dishing out chips….I could do A levels. I dunno. It's all Jimmy Stone's fault. I only left school because of him, and look where he ended up. What do you think?"

Mickey, who had been wearing a creepy plastic grin the whole time said, "So, where did you meet this Doctor?"

Rose looked at him annoyed, "I'm sorry wasn't I talking about me for a second?" Jessa was doing all she could not to laugh. How did Rose not see that this was not her friend? She thought it should be rather obvious.

Not Mickey just continued on, "Because I reckon it started back at the shop, am I right? Did he have something to do with that?"

"No…"

"Come on!"

Rose looked at him suspiciously, "Sort of."

Not Mickey was looking as if he won the lottery, "What was he doing there?"

"I'm not going on about him Mickey, I'm not. Because I know it sounds daft but… I don't think he's safe. I think he's dangerous."

"But you can trust me sweetheart!" He started twitching. "Babe, sugar darling, sugar." Jessa couldn't take it and started giggling quietly, amusement dancing in her eyes. She didn't see The Doctor staring at her in amusement and a little bit of suspicion. He walked up to the table, "Your champagne."

Jessa looked up to see The Doctor, he looked and winked at her. Not Mickey didn't even look up, "We didn't order champagne." He grabbed Rose. "Where's the Doctor?"

The Doctor walked over to Rose, "Ma'am your Champagne."

Rose also didn't look up, much to the enjoyment of Jessa, "It's not ours….Mickey, what is it? What's wrong?" And the willpower it took for Jessa not to roll her eyes was astounding.

"I need to find out how much you know, so where is he?"

The Doctor looked exasperated, "Doesn't anybody want this champagne?"

Not Mickey finally looked up, "Look, we didn't order it…. Ah gotcha!"

The Doctor started shaking the bottle, "Don't mind me. I'm just toasting the happy couple." He looked at Jessa, "And friend. On the house!" The corked popped and hit Not Mickey on the forehead, he absorbed the cork and spit it out. Rose gasped.

Not Mickey said "Anyway," His hands turned into clubs and smashed the tables. Rose and Jessa backed out of the way. Rose a lot more frantically than Jessa. The Doctor grabbed Not Mickey's head and pulled it off. "Don't think that's gonna stop me." Jessa ran over to the fire alarm and pulled it.

"Get out, everybody needs to leave!" The Doctor, Jessa, and Rose ran through the kitchen and out the back exit. The Doctor locked the metal door behind the group. And Rose looked around for an escape. Jessa looked at the blue box with interest.

"Open the gate! Use that tube thing, come on!" Rose shouted.

The Doctor held up what he was holding, "What, this? This is a sonic screwdriver."

"Use it!"

The Doctor shook his head, "Nah. Tell you what, let's go in here." He gestured to the blue box that Jessa had been staring at. Rose ran in after he unlocked, and ran back out. She circled the box, and the Not Mickey made a hole in the door, so she ran back in. The Doctor watched her amused and looked to Jessa, who shrugged and walked in herself. He followed her and shut the door.

Jessa looked around while the Doctor was explaining the head thing to Rose. She tuned back in at the Doctor saying "Where do you want to start."

Rose said "It's bigger on the inside." At the same time Jessa said, "It's not blue."

The Doctor looked at her confused, "What?"

"Well, the outside is blue, why not the inside. Makes more sense to me."

The Doctor looked at her with an amused smirk before turning back to Rose, "Yes it's bigger."

"It's alien."

"Yup."

"Are you alien?"

"Yes, is that alright?"

Rose nodded quickly, "Yeah."

The Doctor grinned before looking at Jessa, "Jessa?"

"Oh yeah that's marvelous."

The Doctor grinned again, "It's called the TARDIS, this thing T-A-R-D-I-S, that's Time And Relative Dimension In Space." Jessa nodded her understanding, while Rose started sobbing. "That's okay. Culture shock, happens to the best of us."

Rose looked up desperately, "Did the kill him? Mickey? Is he dead?"

The Doctor looked sheepish, "Oh, didn't think of that." Jessa rolled her eyes at him.

Rose kept on sobbing, "He's my boyfriend. You pulled off his head. They copied him and you didn't even think? And now you're just going to let him melt?!" And indeed, the head which the Doctor set on the TARDIS console was melting. He ran around trying to stop keep the signal, when the TARDIS shook and he grinned. He ran outside, despite Rose's cries of "Wait!" Both she and Jessa followed him.

They were now next to the Thames. Rose looked in amazement, and Jessa was looking with growing interest while her mind was working the possibilities out. The Doctor was frustrated, "I lost the signal, I got so close."

"We've moved! Does it fly?" Rose asked. To her and the Doctor's surprise, it was Jessa who answered.

"It's much more likely that it disappears and then reappears." The Doctor stared at her with wide eyes.

"Yeah she's right."

Rose suddenly looked devastated, "I'll have to tell his mother." At the two questioning gazes she was receiving she said, "Mickey! I'll have to tell his mother he's dead, and you two forgot him!"

The Doctor rolled his eyes, and Jessa had the decency to look a little ashamed.

"Look, if I did forget some kid called Mickey…."

Rose interrupted him, "Yeah he's not a kid." Jessa sighed again.

"Yes, he is. So are you. But, if he did forget Mickey, then it's probably for good reason."

They stared at her again, before she sighed for what felt like the millionth time, "How do we stop the whatever it is?"

That shook them both out of their daze, the Doctor grinned "Anti-plastic! But first we've got to find it. How can you hide something that big in a city this small?'

Jessa looked at him, "What is it? And what does it look like?"

"It's a transmitter. The consciousness is using Earth as dinner, and is controlling every single piece of plastic on it, so it needs a transmitter to the boost the signal. It should be round and massive, slap bang in the middle of London."

Jessa pointed at the London Eye, "Like that?"

He turned but didn't see anything, "Like what?"

She pointed again, "That!"

He stared before he realized what she was talking about, "Oh, Fantastic!" He took off running towards it, after grabbing both of their hands, forcing them to run with him. They stopped right in front of it, "Think of it. Plastic all over the world. Every artificial thing waiting to come alive. The shop window dummies, the phones, the wires, the cables…"

Rose shuddered, "The breast implants."

She was ignored, "Still, we've found the transmitter. The Consciousness must be somewhere underneath."

They spotted a manhole and ran over to it. They lifted the lid and climbed down the ladder into a dark room. They walked into the chamber connected to the room they found themselves in. In the middle of the room was a wobbling orange mass. The Doctor pointed at it, "The Nestene Consciousness, that's it, inside the vat. A living, plastic creature."

"Well then. Tip in your anti-plastic and let's go." Said Rose.

Jessa stared at her, "We can't do that. It's alive, we have to give it a chance."

The Doctor beamed at her and nodded. They walked down some more steps towards the mass. "I seek audience with the Nestene Consciousness under peaceful contract. According to convention 15 of the Shadow Proclamation."

Jessa had no idea what this meant, but the Consciousness did as it made noises at him.

"Thank you, might I have permission to approach?"

Rose saw Mickey in the background and rushed over to him. The Doctor rolled his eyes, but Jessa smiled softly. She saw that they cared for each other, and was happy for them. "Oh my God! Mickey! It's okay, it's alright." She soothed.

Mickey looked frightened, "That thing down there, the liquid, Rose, it can talk!"

Rose scrunched her nose, "You're stinking! Doctor, they kept him alive!"

"Yeah, that was always a possibility. Keep him alive to maintain the copy." He shrugged.

Jessa looked at him disapprovingly. "You should have told her Doctor." He frowned but kept quiet, and turned around to look at the Nestene Consciousness.

"Am I addressing the Consciousness? Thank you. If I might observe, you infiltrated this civilization by means of warped, shunt technology. So, may I suggest, with the greatest respect, that you shunt off?"

The reply was a low garble.

"Oh. Don't give me that, it's an invasion! Plain and simple! Don't talk about constitutional rights!" More garbling followed. "I…am…talking! This planet is just starting. These stupid little people have only just learnt how to walk, but they're capable of so much more. I'm asking on their behalf-please just go."

Four autons appeared behind them and grabbed Jessa and the Doctor. One of them pulled out the anti-plastic from the Doctor's pocket. He looked pleading, "That was just insurance! I wasn't going to use it. I was not attacking you. I'm here to help. I'm not your enemy. I swear, I'm not…..what do you mean?" Suddenly the doors above them opened to reveal the TARDIS. "Oh no, honestly, no! Yes, that my ship." More angry garbling. "That's not true. I should know, I was there. I fought in the war, it wasn't my fault! I couldn't save your world! I couldn't save any of them." Rose cut in to their conversation.

"What's it doing!"

"It's the TARDIS! The Nestene has identified its superior technology. It's terrified! It's going to the final phase. It's starting the invasion. Get out, Rose! Just leg it now!" Rose called her mom while he looked at Jessa. "I'm sorry Jessa."

She looked him in the eye, "It's alright, I made my peace a long time ago. I've lived long enough." What she didn't tell him was that she wasn't even sure if this would kill her or not. He looked at her oddly, but pushed the thought to the back of his head, there were more important things to do right now.

He yelled, "Get out Rose!" She made to do just that but the stairs collapsed. She turned to try the TARDIS, "I haven't got the key."

Mickey screamed, "We're gonna die!"

Rose looked around and stood up grabbing an axe, "I've got no A levels. No job. No future. But I'll tell you what I have got. Jericho Street Junior School under 7s gymnastic team." She chopped a nearby chain and grabbed it. "I got bronze!" She held on to the chain and swung over the Consciousness and into the autons, knocking them into the vat with the anti-plastic."

The Doctor grinned, "Now we're in trouble." The Nestene started to explode, and they all ran into the TARDIS. They disappeared as everything exploded.

When they reappeared in an alley Mickey ran out looking terrified. Rose stepped out calmly and called her mom. The Doctor and Jessa stepped out grinning like mad.

The Doctor snapped his fingers, "Nestene consciousness? Easy."

Rose looked over teasingly, "You were useless in there. You'd be dead if it wasn't for me."

"Yes, I would. Thank you. Right then! I'll be off! Unless, I don't know… you could come with me."

Jessa smiled at them and turned to leave. "Hey Jessa," He called. "The offer is for you too." She stopped and turned around looking, he noted, very surprised. He frowned at that, she shouldn't look that shocked. She gave him a smile, "I'd love to!" And she walked past him into the TARDIS. Rose declined very reluctantly and the Doctor walked back inside over to the console.

Jessa looked at him with a smirk, "We're going back, aren't we?"

He nodded, and stepped back outside. A grinning Rose ran in after him. The Doctor pulled the lever and they were off.

-9-

They were both in the console room. Rose went to sleep a few hours ago. When Jessa stopped aging, she noticed that she didn't need as much sleep as normal humans. Only 2-3 hours a night. So they sat in a comfortable silence, until the Doctor spoke up, "Are you an alien. I mean you look human, but you know a lot and you act as if you've seen so much. Not that I mind if you are, it just I would like to know."

He was rambling now, and Jessa started laughing softly, "No Doctor, I was born on Earth as a human." Which was true, it just wasn't this Earth. She also didn't know if she counted as human now, but she was born as one for sure.

The Doctor looked a bit embarrassed, "Yeah, of course just checking. But there is something about you that's different. What is it?"

She smirked but didn't deny it, "Now if I told you that, where would all the fun be. It's good to not know everything. Leaves a little unpredictability in life. Good night Doctor." She headed towards her room, leaving the Doctor to watch her with a matching smirk.