"So," Rose said as both Doctors and Martha stopped in front of a blue box. "Um, where's your spaceship?"

"Right here," the blue-eyed Doctor said, nodding with his head at the police box.

"This is your spaceship?" Rose said, her eyebrows rising.

"Yeah," both of the Doctor replied with a hint of amusement. Martha sniggered.

"Something wrong with it?" the Doctor in leather jacket asked.

"Nope!" Rose said, eyes glowing with amusement. "I like the style, I do," she grinned, her tongue poking out, action which made both of the Doctors melt almost instantly. "Bit small though, we'll be squished together. Don't think your girl will like that."

"My... girl?" the brown suited Doctor asked, confused. Martha frowned, wondering if she was talking about the TARDIS. Rose's eyes shuffled quickly, arriving on Martha before looking at him again.

"Oh!" Martha said, surprised.

"No! I-" the Doctor said, his eyes going wide.

"We're not- together," Martha said, frowning her lips. "We're just friends."

"Oh- I just thought, well- yeah," Rose said apogetically. "I'm sorry," she said in embarrasment.

"It's, um, quite alright," the Doctor mumbled, his eyes going wide again for a second before sighing.

"Yeah," Martha said, a hint of happiness in her voice. No one had ever looked at her and the Doctor as a couple, and that made her happy, even if it was a lie. What made her more happy, though, was that it had been his ex girlfriend or whatever she was. She pressed her lips to hide a smile.

"Um, so, shall we go in?" the ninth Doctor said, breaking the short silence.

"All of us?" Rose said, surprised.

"Yeah," the other Doctor said, grinning. He opened the door and motioned them to walk inside.

"Um, okay," she said, biting her lips. "But watch your hands, I don't want-" Rose's sentence was never finished, because as soon as she stepped in she gasped in shock, her words quickly dying at her throat.

"Yeah, um, it's a bit shocking," the old Doctor said, remembering what Rose's reaction had been the first time she had been inside the TARDIS. "Take your time."

Rose's eyes were opened wide and her face was pale. This was complete proof that this men weren't joking.

"B-but," she said, blinking. Her eyes glistened with tears and she shook her head quickly. "It's- bigger on the inside." the Doctor smiled softly at her.

"It is," he said gently. "It also, well, it travels through time and space," Rose nodded, swallowing.

"O-okay," she said, still a bit shocked but she had managed to recover herself. "Um, so, yeah. Let's just- you said you'd explain, right?"

"Quite right!" the Doctor said, grinning again. "You'd like to take a seat," he added, nodding to a small sofa that was far from the console.

"How long has that been there?" Martha asked, frowning.

"Doesn't matter," he said, shrugging. "C'mon!"

Rose walked over carefully, still a bit wary but with much more control of herself now. She did as she was told and sat in the sofa while Martha sat a seat away from her, and the two Doctor's were standing up.

"So, you ready?" the blue-eyed Doctor asked, and Rose nodded. "Okay. Well, picture this, Earth 2005. Yep, 3 years in the future. Anyway," he coughed. "I was trying to locate this aliens who were trying to destroy the Earth, and then I stumble into you. We save the world and then you start travelling with me. We travelled for a very, very long while," he smiled.

"We became best friends," the other man continued.

"Wait, but um, so I knew you both?" Rose said, frowning.

"Oh, yes," the Doctor said. "You see, I'm a time-lord. A type of um, well, alien, and-"

"You're alien?" she asked. "You don't look alien." Martha rolled her eyes. Well of course he didn't.

"Yeah, I don't. Is that um... is that okay?" he asked uncertaintly.

"What? Oh! Yeah, sure! I mean, I don't mind. Not that much. I mean, it's not very shocking after seeing this," Rose said, nodding her head.

"Oh that's great," he grinned. "Well, anyway, you see us time-lords, we have this way of not dying when we have to die. Every cell in our bodies change and we become a new person. Literally. We get a new body- new face, organs, etc. He's old me," he said cheerfully, pointing at his old self.

"Hello!" the other Doctor said, grinning.

"I went back in time to get 'im."

"You can do that?" Rose asked.

"Weeeell," the Doctor said, fiddling with his ear. "I shouldn't. I can. But I shouldn't. But I did."

"Why?" the blonde girl asked.

"You'll see why in a second. Anyway. We travel together, become very close friends, and then something happens and you end up somewhere else- doesn't matter how, what matters is that you can't be with me anymore. Don't worry," he quickly added, looking at her troubled face. "You didn't die. You're just... away. With your family. And we can't be together anymore," he said gloomly. "Then I start travelling with Martha, good girl she is, pretty awesome," he grinned. "And the TARDIS suddenly brought us to Earth on 2005, at that shop, the day we met. She wanted me to follow my old self, so I did," he gulped. "And, right in the place where I was supposed to find you, you weren't there. So, Martha and I did a little re search and well- you, you were dead. They had murdered you," his voice was now thick with emotion, his eyes dark and furious.

"They- I'm going to die? When... when I turn 19?" she asked, her eyes widening.

"You're not supposed to. That's the thing. Someone decided to play with the timelines, and let me tell you, Rose, the timelines are a very delicate thing. They could create something as big as to destroy the universe. And they did. And now, we're gonna stop them." He smiled. "Rose Tyler, we are going to save you."