Part 4: Chair

(A/N) Sorry, I took a few days off for Christmas. Last chapter, save for the epilogue, then it is finished! Btw, don't own anything.

"Nefu. Chair. Fafu. Chair," the Doctor said to Netar. "Near future. Far future," he said, solving the puzzle. "The Nefu are humanity in the near future, a more recent landing party, likely. The Fafu are humanity in the far future, the original landing party 250 years ago. The Immuno 58. It must have created a dormant, Fafu gene in humanity, which was triggered by the landscape and the planet. Evolution times a thousand! That's why I can't save Clara; it's what she'll become!"

"Yes, Doctor, you are correct," Netar said grimly. "And I, am the missing

link. The last of the original landing party, partially changed, but not fully," he said miserably.

"I'm sorry, I'm so sorry, but I've got to go!" the Doctor said, running back onto the horizon.

Clara began to scream in rage, taking out her anger on the wall. She hated the Fafu that bit her, for not giving her a fair chance to fight it! Her warped body had decimated her clothes, ripping them to shreds. However, she didn't care. Not now.

"She'll be entering Stage Three any minute now!" Tellark murmured from behind the door.

"Let's hope the Doctor hurries up," another Nefu said.

The Doctor ran up the stairs, finally reaching the city. He ran to

the cell, feeling the coarse stone door. His sonic was in one hand, furiously buzzing at the vial in the other hand, changing the venom into an antidote.

"Let me in," he ordered to Tellark, producing the vaccine.

"Doctor, if she's entered Stage Three, she'll kill you!"

"If she's entered Stage Three, I don't deserve to live. Open it!" he shouted in a melancholy tone.

As the door swung open, the Doctor saw a Fafu, some thin, red threads wrapped around it's body. It roared vociferously at Tellark but stopped slightly when it's gaze fell on the Doctor.

"Tiny scrap of humanity left, just enough to recognise me. Bottom's up, Clara," he said, leaping at her, pouring the venom down her mouth. Instantly, the Fafu fell to the ground an writhed in agony.

"It's working!" exclaimed Tellark in astonishment.

"Yes," the Doctor concurred, as he watched the body turn back into Clara. Taking off his jacket, he covered her with it just as she returned to human form, as he realised she was naked, due to her ripped clothes. "Welcome back," he said with a smile.

"Doctor, we're not free yet!" Tellark shouted, looking out over the ridge. A swarm of Fafu surrounded the Nefu city. The Doctor practically flew down the steps, followed by Tellark. As they reached the steps, the Doctor recognised Netar.

"What the hell is that hideous thing?" Tellark asked in disgust.

"That hideous thing, is your saviour!" the Doctor shouted back. "Netar, why have they come?"

"They believe that you will eradicate the Fafu with your cure,"

"Eradicate?" the Doctor asked in bewilderment. "I stopped a mutation, not commited genocide!"

"They want to be Nefu, Doctor!"

"No. The Fafu are the end result, I can't say what will come next. I am a helper, so help I will!"

"The Nefu and the Fafu are the same race!" the Doctor shouted. "The same race, just one further along the evolutionary scale. The Immuno 58? That's what started this! If you hate the Fafu, you hate yourself!" he shouted to all of the Nefu. Netar grinned at the helper, not even noticing the Fafu emerge from the hordes, sneak up behind him and bite him on the arm.

"Netar, NO!" the Doctor howled. As he ran to his side, the hybrid put up a hand to stop him.

"No, Doctor, it is like you said. The Fafu are the future; better late than never, eh?" he asked, before collapsing.

"What will happen to Netar now, Doctor," asked Clara, who was leaning against the TARDIS console.

"The Fafu will use some venom. Enough to turn either fully Nefu or Fafu. Either way, it's what he wanted," the Doctor answered, shutting the door behind him. Clara paused for a beat before considering her next question.

"What was the Immuno 58 used for, Doctor?" asked Clara, back in the safety of the TARDIS.

"Mostly protecting the immune system against viruses such as HIV. Some even say it helped to cure the common cold," the Doctor replied, tapping in some commands into the keyboard.

"

Mostly

"So in their quest for peace, they created a civil war?"

"Very profound, souffle girl, very profound," the Doctor commented. "On the medical theme, why not a hospital next?"

"Any mutants?"

"No promises..."