Hi there! I'm not sure if this type of story has ever been done, but here it is. Warning: I'm not very fast in updating, so please bear with me. Please leave a review so I can keep improving! Thank you and I hope you enjoy! :)

She walked into the console room, taking a look to see if the Doctor was around. With no one in sight, she began circling the console, her left hand trailing on the edge of it. You could see from her eyes that she wasn't paying attention to what she was doing, not really. Her mind was some place else. Somewhere far away from the TARDIS.

Suddenly, she felt a surge of energy coming through her fingertips, where she was touching the console. She jerked back in surprise, but something else had happened. Something she couldn't make sense of. She saw a brief flash of an image in her head. It was just an ordinary girl. She had never even seen that face before.

What was happening?

She finally came back to her senses and smacked the console. "What was that for? Who was she?"

The TARDIS gave a soft whining sound, but it was proceeded by a loud bleeping.

"Oh what is it now?" she said, as she walked over to the screen. She looked at it with great puzzlement, as if it was the weirdest thing she had ever seen. "But… what does it mean?"

"There you are, Clara! I've been looking for you!"

Startled, she looked up and instinctively backed away from the screen, as if she was caught doing something bad. Noticing this, the Doctor swiftly walked up to the screen to see what was wrong.

"What were you doing, looking at the screen?"

"N-nothing, really," replied Clara. She didn't know why she was acting so strangely. It was just that… something about the girl and what she saw on screen made her feel… uneasy.

The Doctor had turned away and was now fiddling with the switches. She walked up to him, voicing her concern. "Look, Doctor. The screen, it sh-"

"AHA!" cried the Doctor. "So you were messing around with the screen!" He sighed in frustration and started ranting.

"How many times have I told you that-"

"Listen, there was-"

"-you shouldn't be playing around with the console! What if something goes wrong and we end up landing at the end of the universe?"

Clara stopped short. "Wait, the end of the universe? The universe has an end?"

After a pause, the Doctor went back to flipping switches and pressing buttons.

"You're not answering me! There's an end to the universe?"

"Well of course there is," he said matter-of-factly. Then he stopped working and just leaned on the console. "Everything ends."

"Did you- um… did you ever go there, Doctor?" she asked quietly. She could sense that there was something off.

"Yes," he whispered, barely audible. But Clara heard it clearly. She knew that it wasn't something he wanted to talk about though, because his shoulders slumped and he didn't say or do anything else. He just looked down.

She tried to change the subject by brightly asking, "So… where should we go now?"

He seemed to not hear her for a moment before finally snapping out of his reverie and replying her with, "Well there is this marvelous planet that is covered with cotton."

"Cotton?"

"Yes, cotton. It's really nice to just lie down or jump around. I once went there with-"

He stopped short. Then he seemed to shake it out of his mind and he returned to flipping switches and typing things.

"With whom, Doctor?" she asked, curious as to why he stopped mid-sentence. He ignored the question completely as he pulled a lever and the TARDIS made it's usual landing noise.

They both walked out, expecting to see a cotton-covered planet. But all they saw was a barren, empty ground. It was just brown dirt as far as the eye could see. The skies were grey and there were no clouds. On the planet itself, there didn't seem to be a trace of life.

He ran back to the console and looked at the screen. "No no no no!"

"What is it Doctor? What's wrong? Where have you taken us?" she asked immediately as he started typing furiously.

"We're in the planet I told you about. Calisso. The planet covered in cotton."

"Well, sorry to burst your bubble but there doesn't seem to be anything soft out there. Just brown dirt."

"Exactly! What happened here?" he asked, obvious frustration in his voice.

"Well," Clara said, excitement rising in her voice, "why don't we explore Calisso."

"Doctor, are you sure this is Calisso?" she asked him yet again, wiping the sweat off her forehead. They had been walking about for nearly two hours now, and it might jus be her, but it was getting hotter.

"Yes, yes, yes, of course I am," he replied while sonic-ing around. "I'm not really getting any strange readings."

"Then are you sure this is the cotton-covered planet? Because we haven't seen a trace of cotton, or even a trace of life," she stated, talking too fast as usual.

"Yes, of course. Stop asking me," he said. After a while, he started babbling. But Clara wasn't paying attention anymore.

"And that's why it was covered in cotton. Did you also know-"

"Doctor?"

"-that this planet was so fluffy that-"

"Doctor…"

"-some people would lie down and just sleep for-"

"DOCTOR!"

"Yes, what is it?" he finally said in annoyance, turning around to face her.

Clara was just staring intently at something, her face full of disbelief, wonder, and most of all... fear. The Doctor automatically knew something was wrong. He slowly turned his face to see what she was looking at. The moment he laid his eyes on it he stood up straight and faced the fire.

It was a huge ball of fire that could've swallowed a mountain. It seemed alive, with its flames moving around and occasionally reaching out of the near-perfect ball shape.

"Is that supposed to happen?" she finally asked, not taking her eyes off of it.

"Well, I'm guessing... no," he replied, sonic-ing the gigantic fire dancing above the ground.

"It's literally a ball of fire. It doesn't have any components that's out of the ordinary, but I can't trace its origin," he said, looking at his sonic. "And apparently..."

"Apparently...?" Clara asked, a note of panic in her voice.

"Well, it's actually moving closer."

"What?" she cried in disbelief, finally taking her eyes off of the fire to look at him.

"RUN!"

Clara quickly closed the TARDIS door, while the Doctor ran straight to the console and started flipping switches and levers frantically. Clara backed away from the door towards the console.

"What just happened? Why is there a ball of fire on the planet of cotton?!"

The Doctor stopped fiddling with the switches and faced the console. "It was literally a moving ball of fire," he said quietly.

"Yes, I can see that," she snapped back, not realizing the change in mood. "I know it's a ball of fire, but why is it on that planet?"

"Don't you get it?" asked the Doctor, terror and despair creeping into his voice. He finally turned around to face her. He looked heartbroken and defeated. "That fire... It burned the planet. It burned every living thing it could find on that planet."

Clara stared at him, his words sinking in. Her eyebrows creased in terror and confusion. "But... why would anyone do that? Who would do that?"

His face was grim. "I don't know. But I have a feeling that that's not the first or last planet to burn."