Both Doctors were equally surprised, Nine because he wasn't quite really expecting to bump into anyone here and Twelve was hardly expecting to bump into and meet one of his former incarnations, namely his Ninth self. Twelve just looked right at Nine with his "attacking eyes and eyebrows" in a look of surprise '...you' he said after about a couple of seconds, Nine didn't seem to acknowledge his delayed one word response 'Oh hello, I wasn't expecting to bump into anyone here, not really' said Nine. Twelve just kept looking at him, almost in a questioning way 'what are you doing here?' he asked.
'Oh no reason really I'm just lost, I found this place by accident, I'm the Doctor by the way' said Nine. 'I know' said Twelve, this brought about a look of confusion and surprise on Nine's features.
Twelve could tell by the look in Nine's eyes and the tone of his voice as well as his evident surprise and confusion that he hadn't understood the nature of his question and didn't recognise himself 'no, what are YOU doing here?' Twelve firmly reiterated, further confused and surprised by Twelve's repeated and emphasised question and unsure how exactly to answer Nine furrowed his brows 'uh, sorry I take it you know who I am, have we met before?' Nine queried.
Twelve ceased his "attacking" look and replied 'we don't need to have' in an almost amused tone the hint of a grin barely crossing his features, again Twelve's response left Nine confused '...uh, ok then how do you know m- ' Nine questioned, stopping abruptly part way through his words and looking at Twelve more closely who stood where he was and waited patiently for his former self to realise.
Nine stared at him for a couple more seconds before his eyes widened and he finally said 'oh blimey, look at the eyebrows on me it's like they mutated, I always knew my age would catch up to me on the outside at some point, but I see now' Nine said as his surprised look subsided. Twelve looked at his past self with a look that said "oh, really? You're going to say that?". Nine drew back a bit before he posed another question 'so, what regeneration are you at?'.
Twelve immediately replied 'it's complicated, I'm the Twelfth in a way, but then I'm also the thirteenth…' he said, Nine then looked at him curiously 'really? How so? And blimey I became Scottish' he said. At Nine's words Twelve's face lit up 'yeah, it's great I can complain about things now' Twelve said with a big grin, Nine's look, however, had turned to that of scrutinisation 'it's no wonder I get so old looking' said Nine. Now Twelve's look changed, to that of...well, it spoke "oh come on, really?" 'oh really, you're going to do that? I've only just taken on a bit of character' Twelve said as he briefly rubbed his face down 'and to answer your question you kind of, sort of already know, and you'll figure out the rest at some point with your next face'. This then left both Doctors looking at each other almost expectantly, before Twelve then initiated further conversation with them both replying and answering immediately after one another.
'So, you got past the rods then' said Twelve.
'Yes I did, thanks for asking, you'd know considering you used to be me' said Nine.
'Hence the tone of my words' Twelve said.
'Don't suppose you know what's beyond that door?' Nine asked
'Can't say I do, like you I got just reached this door' Twelve replied.
'Well what are we doing still standing and talking then? On we go' Nine suggested.
'Waiting for you to stop prattling on, and after you' Twelve responded.
'Elders first' said Nine.
'Oh but I insist' said Twelve. They both continued to hold each other's gaze for a few seconds before they simultaneously brought out their sonic screwdrivers, raised and pointed them at the door and soniced it which made it click open inwards. They both then put their sonic screwdrivers away before Twelve said 'come on then' Nine immediately responding 'let's do it' all the while still holding each other's gaze before they both turned to the door and went through it.
Inside, their conversation didn't cease, 'so what are you doing here anyway?' Nine asked.
'I could almost ask you the same thing' Twelve responded.
'Yeah well I asked you first, and you understand why I'm asking' Nine said a mildly insistent way.
'Yes I understand, and to answer your question, I found myself in this place, after the TARDIS was sucked into a giant planet-like vessel' Twelve responded, this made both Doctors stop and turn to each other, Nine because of what his future had just said and Twelve a couple of feet from his past self because he had stopped. 'A "planet-like vessel"?' Nine questioned 'that's how you came to be here?' he said.
'Yes, why? How did you get here?' Twelve responded.
'Well I was on the space station city Meyamoto 12 with Rose, but then there was a blinding white light and then I found myself here…wherever here is' Nine said as he looked around as he spoke the last few words. Twelve's features twitched a bit at the mention of Rose before he said 'well I'm beginning to think I know where, or what I should more or less say, here is' Nine began to look at him questioningly '…and?' he said. Twelve returned his look with that of a curious one 'have you noticed the peculiarity of the pillar of energy streaming into the sky, which doesn't seem to be a sky at all- ' Twelve said before Nine intercepted the rest of his words 'because it's not a sky' he began. 'That portion of the sky has an anomalous look to it which makes it subtly stand out, possibly because of a perception filter, which if the perceptive eye was to really look at it would notice that the stream of energy is actually going into a port- ' Nine said before Twelve concluded **** his words this time 'which is what you would find in a space station or vessel, which would suggest- '. Nine intercepted his own words again 'that we're not on Earth or any planet, we could well be on the very thing that intercepted your TARDIS and brought you here' he said, a slightly open mouthed grin crossed Twelve features 'now we're getting somewhere' said Twelve 'and we might just more than get somewhere if we see what this lever does' Nine said before he raised his sonic screwdriver at something over Twelve's shoulder behind him in the shadowy dark, probably the ceiling which then emitted a light to reveal exactly what Nine said would be.
A lever.
Nine stepped forwards to go to the lever, but not before Twelve being one step ahead of him went ahead first to it 'but then how do we know that this lever will do anything of benefit for us? It could cause the ceiling to come down on us' Nine said in a "think before action" way. Twelve didn't stop to pause and got into position to manipulate the lever 'it could, it might just be a trap, but we can only try which is better than inaction and wondering what it could do, it might just help' he responded, Twelve's face contorted a bit with effort as he proceeded to shift the lever which budged a bit, but then seemed to get stuck. Nine grinned a bit 'the centuries catching up on me are they?' he said as Twelve continued to heave and strain against the lever 'oh shut it you could be helping, after all…' Twelve said before he stood up panting a bit 'I am the eldest of us, you're younger so come and give your "old self" a hand'. The grin on Nine's face grew as he was almost giggling as he stepped forward, which Twelve noticed 'and wipe that stupid grin off your face' he said.
'Oh sorry am I being disrespectful, sorry I couldn't me self' Nine said jokingly as he too got into position with the lever with his older self.
They both pushed against the lever and this time it moved gradually and steadily into the opposite position from its original place "power restored, lake bridge enabled and activated" a slightly warped sounding mechanised male voice said as a display of a location of the lake side, with the island with the pillar of energy in the background, they had both found themselves at appeared. On the display were two figures, two men, standing a few steps away from a steel frame bridge, likely the same bridge the voice had referred to seconds go. Twelve's eyes widened in surprise as he recognised the two men 'those two…what are they doing here' Twelve wondered and questioned out loud, Nine looked at him then back at the display 'what? You know those two?' Nine asked.
'What am I doing here there?' Twelve said before he turned and went back to the doorway as he said 'they're us' and left while Nine took a second to acknowledge his words 'ah, right, more me' he said before he made an "oh, okay" face. He then followed behind himself hot on Twelve's tail.
As the two Doctors raced their way through the labyrinth they came across first a lone Cyberman 'you will be upgraded, resistance will not be tolerated, resist and you will be deleted' it said in it's dull, flat and raspy tone as it began to come after them 'run!' they both said at the same time.
After running from it, avoiding it and slipping past it they both then encountered a Dalek 'Doooctoooor, you will be exterminated! Exterminate! Exterminate!' it cried out as it too began to follow behind them as both Doctors ran from it also 'oh great not you too' Nine said as he skidded to a halt 'just keep running!' Twelve said he turned on his heel and ran back the other way, though Nine had already done the same as well. After taking a few tricky turns they lost both the Dalek and the Cyberman and circled back as best they could.
Just when they thought they were on the final stretch to safety the Cyberman appeared metres ahead of them while the Dalek appeared the same distance behind them 'you will be upgraded, resist and you will be deleted' the Cyberman said again 'you will be exterminated! Exterminate! Exterminate!' cried the Dalek again. They were trapped!
However as the Cyberman advanced on them and the Dalek fired on them as they ducked a portion of the wall to their left slid aside to reveal another path which they followed without hesitation, quickly got their bearings again and headed for the way out.
Minutes later they were both outside the labyrinth and running back to the lake while keeping a keen eye out for the beasts which had stalked them earlier.