One death means two lives.

Characters: Jack, Martha, The Doctor, (Later on,) Gwen, Toshiko, Owen and Ianto.

Summary: The Doctor, Martha and Jack are fighting a loosing battle when a forest fire hits the horse head nebula. One of them is going to die, but who? Oh and Martha's travelled with the doctor whilst Rose was there as well.

Disclaimer: I do not own Doctor Who or Torchwood nor do I own any of the characters.

"HERE WE ARE!" the doctor cried as he ran out of the Tardis doors and looked around. Jack and Martha followed and stared around in awe of the beautiful sight around them. There was nothing but green fields and trees, lots of trees, a whole forest that seemed to go on forever, maybe even over the whole planet. "Lets walk for a while" suggested jack "walk?" The doctor was shocked "Hell, we're tourists, why not?" said Martha "oh ok then".

They walked for a while until they found a nice looking bar and went in for a drink. The doctor had something called a grass shake. Jack had the same and Martha chose something called a cock-and-tail (sounds lovely, I know). They had three rounds and by the time they left it was late and they decided to go back to the Tardis for the night.

Loud screams woke them up three hours later. Jack was not happy, neither was Martha but the doctor was bounding around like usual shouting with frustration because he didn't know what was happening. After he'd finished doing what he was doing they all ran out to find out what was happening. There were creatures hurtling towards them screaming and crying with their children in their arms. They were running from a massive fire that was roaring through the forest like nothing they'd ever seen before.

They ran as fast as they could knowing there was probably nothing they could do. Then suddenly the doctor had a thought "shit, we've got to do something, without this planet the human race has got nowhere to go when it gets fried and if we let this fire keep going the whole planet will burn" he was rushing again but they understood every word. Without the kindness of the horse heads humans would have nowhere to go and would die out too quickly. "Well whatever we do we've got to be quick" jack was right, there was no time too lose, the fire was spreading quickly and would have spread across the whole planet in a few hours. They couldn't have that. "What do we do?" Martha screamed as she realised that the fire was heading towards them. "I've got some equipment in the Tardis that should do the job" they ran to the Tardis, which was only a few metres in front of them and went inside. The Doctor rushed about with wires and machinery in his hands, plugging things together. The whirring of machines revving up getting ready to go.

After an hour The Doctor stopped and looked at Jack and Martha. "There is one sacrifice that we will have to make" he sighed, "What is it?" asked Jack and Martha "if the two of you stay then you will die and I can not have that" "yes Jack the instrument will even kill you, if the chemical sinks in to your skin then you will burn to death". "What will happen to you?" Martha cried, "not even this can kill me, I will regenerate and hopefully find you again".

They had a group hug. "Here, take this" The doctor threw Jack the extrapolator and Jack fed in the coordinates and placed it at Martha and his feet "Wait for my signal, then press the button on the top and jump on to it, ok" said the doctor as he put his hands on the lever that released the chemicals. "5… 4… 3…2 … 1…GO!" Jack pressed the button and him and Martha sped off through the vortex.

It seemed like they were travelling for hours but at last they landed. In a place that seemed extremely familiar to Jack although he was happy to see it. "EARTH, CARDIFF, TORCHWOOD YEEEEEEEEEEEEEEESSSSSSSSSSSSSSSSS WE DID IT" Jack screamed and danced around whilst Martha stared at him in amusement. Suddenly four screams of "JACK!" "GUYS Its JACK". Jack turned to see Gwen, Owen, Toshiko and Ianto running towards him.