Hi!

This story was co-written with my amazing friend, Golden Disasters. She wrote things from Kirk's point of view, and I wrote the Doctor's. It was written for a school project about paradoxes. Please leave your thoughts in a review :)

Prologue:

It was oddly beautiful, the destruction of the Earth's solar system.

He watched it from a safe distance, hidden away inside the shuddering walls of his TARDIS, and wondered what he had done to deserve something like this this time.

Nine hundred years of saving, observing and helping these beautiful ape-like creatures, and in half a second of mindless heat and terror and destruction, they are blown from the universe like dead leaves in the wind.

Leaning back against the console of his TARDIS he ran a hand across his face, almost surprised when his fingers came away wet.

Those young, young humans who predicted their sun would expand but weren't prepared for the idea that some outside force could end their tiny little blue world. He stared at it, watching as planets crumbled in on themselves, exploding in rivers of fire across the darkness of the universe. There was no trace that just three hundred years ago(the last time he had dared to visit that bright little planet) any civilization had existed.

"Someday it's all gone...even that sky." He had said that to Rose in his previous face in a moment of bitter spite, but he had never thought that the end would come so soon.

Too soon.

What year was it?

Spinning around he half-ran, half spun to calendar and reached for his glasses. The sun was supposed to die(as predicted by the humans) at the year six billion. It was 2200.

What?

"This isn't right," he hardly heard himself, only felt his lips form the words as time raced wildly through his mind. Future, past, present, possible future, the burning of the solar system...it wasn't fixed time, not yet.

Could he change it?

The TARDIS shuddered under his hands. He took that as an answer.

"Come on, then," he whispered to the emptiness of his TARDIS. "Let's go save those little humans again."

Without even waiting for him to punch in the coordinates, she threw herself forward into the vortex.

He clung to the handrails, and despite the solar system burning behind him, the wild pulse of time pulling at his mind, the wild shuddering of the TARDIS and the sparks flying from the console, he found himself laughing.

He had to admit, the landing wasn't the best.

Honestly he was surprised there was somewhere to land at all, with all the screeching and burning the TARDIS was doing.

Somewhere throughout the flight he had ended up on his back. Pulling himself up he gave the console a slap. "hey, hey, settle down, girl, settle down."

Sparks spat in his face.

"Let's go see where we are, shall we?" He indulged himself by holding out his arm to an imaginary companion and sauntering out the door.

Something hard, metal and somehow familiar to this face was pressed to his temple. "How did you manage to come aboard this ship?"

"Well," He said and lifted his chin to get a view of his attacker, expecting another human.

Pointy ears. Alien?

"My ship landed here."

Hands clamped down hard on his arms, forcing him to his knees. "This is a Federation ship. Are you a member of Starfleet?"

For the first time in at least seven hundred years, he was really, truly confused. "Starfleet?"

"Let him up, Spock," this next voice was surprisingly human after the cold tone of his alien companion.

"Oh good," He said. This man was young, but there was an old quality to his eyes. "Someone's in charge."

His comment was met with a level stare. "My name is Captain Kirk. How did you come on our ship?"

"I told your friend, here. I landed." He flashed them a brilliant smile. "And you can call me, The Doctor."