[ WP ] Based on this /r/asksciencefiction thread , write a story about the TARDIS landing The Doctor in the throne room of the Emperor of Mankind , circa 40,000 AD

The TARDIS wheezed and whumped into existence, stirring up the millennia dead, sterile air. After a moment, one of the doors swung open with a tired creaking noise. 
 
 `` Right, now, Clara Oswald, *the future! *'' The Doctor leaped across the threshold, `` Of Earth this time, we should be here right after the 3rd lunar war, the greatest celebration in a century has just started and they've invented a fantastic new cocktail named after the Empress of China.'' 
 
 The fun part is making them look impressed, he thought to himself, one of the best reasons to bring along a human. They always looked impressed. That and they reminded him of Timelords. Standing motionless at the TARDIS door, head tilted to the side, Clara looked more confused than impressed. 
 
 `` What?'' 
 
 But the problem with them is sometimes they break. His hand shot to the the sonic screwdriver, and flipping it to scan mode he passed it a few times in front of her face. No response, scans show she's perfectly healthy. He smacked it with the palm of his hand a few times, that usual helped, but no change. Finally he turned to see what she was looking at. Before them were two enormous golden doors, several stories high, engraved with an image of an unthinkable battle. No, a slaughter. Twisted, inhuman shapes fighting against a heroic figure clad in enormous armour. A pair of titanic robots flanked the door, both armed with weaponry that would make a Dalek reconsider its plans of universal conquest. 
 
 Snapping out of it, she turned to the Doctor, `` I thought you said we were going to a party? This looks like a war zone.'' 
 
 `` Yes. Well.'' He said, fiddling with the screwdriver for a moment and scanning the robots and then the air itself. `` This is Earth, and it's the future. Rather a lot longer in the future. I was aiming for 4,000 A.D.'' 
 
 `` When are we Doctor?'' 
 
 `` Ummm - sometime in the 41st millenium. After 40,000 A.D. Somewhere in the Himalayas. Must have punched in an extra 0. Woops! Oh look they've got the banners and flags out!'' 
 
 He pointed up at the ceiling, from which hung hundreds of battle standards, most torn, and squinting her eyes, Clara was sure she could make out long dried blood stains. All hanging motionless, no breeze. They were interrupted by a sudden cacophony of hydraulics and metallic booms, as if an enormous cymbal was being raised and dropped by multiple robotic arms. They instinctively looked down towards the gate, but it was n't moving. The echoing, thumbing, stomping noise grew louder, and finally they both peeked round the TARDIS. Before them they saw an enormous, golden throne built into the back wall of the room, the wall itself criss crossed with pipes, tubes and wires, like a vast circuit-board. Upon the throne sat a figure, too far away to see clearly. And somewhat more urgently, advancing at a steady but cumbersome pace towards them marched an unbroken line of what looked like over-sized cybermen: 8 feet tall, and covered from head to toe in gleaming gold armour, etched with ornate eagle designs, waist and shoulders ringed with red skirts in the style of a Roman Legionnaire, and topped off with an enormous red plume. Their black capes billowed behind them, draped upon the armour like funeral shrouds. Each carried in one armoured fist a 10 foot long spear, into which was build some sort of gun, in the other fist they clenched tall golden shields, upon which was an image of a similar figure in similar golden armour. The armour was powered, whirring with hydraulics and booming as each heavy boot stomped down on the stone floor. Hundreds of them, marching in sync, directly towards the TARDIS. 
 
 The Doctor stepped round his ship and in front of the advancing forces. They halted, and leveled their spears towards him. A hundred lasers pointed directly at him. 
 
 `` Hello, I'm the Doctor! I would shake your hand but...'' 
 
 `` SILENCE.'' An even larger figure stepped out from the ranks, wearing no helmet, his bald head showed a glaring, serious face, one with which there could be no bargaining. Peeking out from behind the TARDIS, Clara could see the circuitry of the armour pierced his skin in multiple places. Man and machine melded into one. 
 
 `` YOU HAVE VIOLATED THE HOLY GROUND OF THE SANCTUM IMPERIALIS. THE PENALTY FOR WHICH, IS DEATH. YOU HAVE APPROACHED THE MOST HOLY PLANET OF TERRA IN AN UNKNOWN VESSEL WITHOUT AUTHORISATION OF THE HIGH LORDS. THE PENALTY FOR WHICH, IS DEATH. YOU HAVE WITH YOUR VERY PRESENCE ENDANGERED THE LIFE OF THE GOD EMPEROR -'' 
 
 `` Oh let me guess, the penalty for which, is death?'' 
 
 `` SO YOU ACKNOWLEDGE YOUR GUILT IN THESE CRIMES?'' 
 
 The hundred strong phalanx adjusted, prepared to fire. 
 
 `` Yes. But, one question. Why does our very presence threaten the life of the'God Emperor'?'' 
 
 The figure squinted, as if he could n't understand the question. 
 
 `` THE GOD EMPEROR WAS MORTALLY WOUNDED ON THE LAST DAY OF THE HORUS HERESY, WHEN THE FORCES OF CHAOS FOUGHT THEIR WAY TO TERRA ITSELF. YOU MUST BE A HERETIC IF THE IMPERIAL CULT HAS NOT ENLIGHTENED YOU WITH THE TRUTH OF THE EMPEROR. THE PENALTY FOR WHICH -'' 
 
 `` Is death?'' 
 
 `` NO. SERVITUDE IN A PENAL LEGION.'' 
 
 `` Well I'm glad we cleared that up. You see, I heard he was mortally wounded, and well, they call me the Doctor for a reason -'' 
 
 At that moment what appeared to be a human skull, its forehead stamped with a large red `` I'' and various robotics trailing from under the upper jaw, floated over the gathered soldiers towards the Doctor and the booming commander. 
 
 `` Chief Custodian,'' The skull said, indifferently `` urgent message from the Inquisitorial Archives. Priority Maximus.'' 
 
 `` RELAY MESSAGE. QUICKLY. I HAVE AN EXECUTION TO PERFORM.'' 
 
 `` The entity called'the Doctor' is known to us. His presence has been recorded at various critical times in mankind's history. He is to be treated with maximum deference. He is recorded as being the greatest warrior who has ever lived, beyond even the Emperor. All available resources are at his disposal. Including, if required, the Adeptus Custodes. This order has been approved by the High Lords of Terra.'' 
 
 `` WHAT?'' 
 
 `` Message Ends.'' The skull floated away. 
 
 The soldiers, hearing the message acted as one, raising their spears and kneeling before the Doctor. The Chief Custodian continued to stand. 
 
 After a few minutes, with more deafening marching by the assembled Custodians, the Doctor, Clara and the Chief Custodian stood before the towering Golden Throne. Upon which they now saw, sat a dangerously thin man, staring out across the room, his head held up by a frightening array of tubes and wires which exited the back of his skull and trailed off into the machinery above and behind him. With the Custodians stood at attention, the room was deathly silent. 
 
 Pausing only to adjust his bow tie, the Doctor climbed the golden steps, screwdriver in hand. Advancing behind him, Clara hazarded a glance back at the Chief Custodian, he stood motionless at the foot of the throne, watching. The doctor stopped, abruptly, and Clara walked into him. Almost falling, she caught a glance at the Emperor of Mankind. He was n't just thin, he was nothing more than a skeleton, rotted away in tattered rags. 
 
 `` He's -'' 
 
 `` Shh.'' The Doctor cut her off, and turned, whispering in her ear `` You do n't blurt out in front of 300 heavily armed fanatics that the being they worship as a God is in fact dead.'' 
 
 He powered up the screwdriver and began scanning the throne first, muttering to himself. `` advanced life support. Mostly still functional. But no good now, why is it still working?'' Then he pointed the screwdriver at the Emperor and stopped. He smacked it with the palm of his hand a few more times and boosted the power, shaking his head and blinking rapidly. 
 
 `` What is it?'' 
 
 `` Oh it - well. I think my screwdriver is broken. This ca n't be right.'' 
 
 `` What ca n't be right?'' 
 
 `` Well, it says that he's still alive.'' 
 

