Doctor!
- Doctor? - Doctor?
It's the end.
But the moment has been prepared for.
ADRIC: The Watcher!
NYSSA: So he was the Doctor all the time.
(DOCTOR WHO THEME)
(ALARM BLARING)
Doctor: r... oh.
These are secure premises! Now, you lot have got some explaining to do.
- But the Doctor... - He'll be taken care of.
Look, will you let me go?
Look, take your hands off me, this is an official uniform!
- Leave me alone! - Now, don't be silly!
We would like to help you, but we can't just leave the Doctor!
Something might've gone wrong with his regeneration!
(SIREN WAILING)
Hands up and lean on it. Come on, quick!
We're perfectly harmless, unfortunately.
I thought the whole point of this Pharos project of yours
was to track down alien intelligences.
We thought we'd save you the trouble and come to you.
Oh, yes?
Yes! We're what you've been looking for. Alien intelligences.
You see, I come from somewhere up there.
That is the way into E-Space.
(ENGINE STARTING)
Adric, quick!
Get him!
Get off me!
Get the Doctor, quick!
I'll hold him. Get the two girls!
This works the door. That's all I know about these controls.
We can't take off without Adric. Doctor!
Where's he off to now?
Right, young man, you better come along with me.
Look, I hope you realise the Doctor's just saved us all from the Master.
And now he's going to take off and you'll never have a chance to...
Tegan!
- What's the matter? - The Master's Tardis.
Adric! Adric, where are you?
He took off once before, he said, but that was by mistake!
(WHOOSHING)
(MASTER CHUCKLING)
Good takeoff.
- The Doctor's very strange. - He's weak, it's the shock.
Well, you better go and talk to him because I don't understand this scientific stuff.
- He's looking for something called a Zero Room. - Zero Room? I'll go.
That boy never even said thank you.
Ah, you've come to help me find the Zero Room.
Welcome aboard. I'm the Doctor.
Or will be if this regeneration works out.
I suppose this is the mean free path tracker.
And this panel must be a referential difference.
I know the Tardis is huge, but it can't be taking them this long, surely.
What's a Zero Room, anyway? The Doctor said something about null interfaces.
I suppose it's some sort of neutral environment.
An isolated space, cut off from the rest of the universe.
He should've told me that's what he wanted. I could've shown him Brisbane.
Now, ordinary spaces, of course, show up on the architectural configuration indicators,
but any good Zero Room
is balanced to zero energy with respect to the world outside its four walls.
Or however many walls it has.
There was a very good polygonal Zero Room under the )unior Senate block on Gallifrey,
widely acclaimed for its healing properties.
Romana's always telling me I need a holiday.
But Romana's gone, Doctor.
Gone?
Really?
Did she leave a note?
We said goodbye to her at the gateway! Don't you remember?
Well, if we did, we did.
This should get you back to the console room when the time comes.
Are you sure you're all right?
There's strong dimensioning forces this deep in the Tardis.
Tend to make one a bit giddy.
- And the regeneration? - I don't know.
I can feel it isn't going to be as smooth as on other occasions.
Sooner we get to this Zero Room place, the better, eh?
These mechanisms are too complex.
We just can't fly the Tardis without the Doctor's help.
What if we don't get it? Anything could've happened to him and Adric.
Then the Tardis will just fly on and on, until it crashes into something.
- Crash? Is that likely? - Inevitable.
The star densities in this galaxy vary inversely with the...
Oh, rabbits!
Tegan, I don't know what's happening to the Doctor, none of us understands it,
- but I do know that panicking is no use. - You're right.
Well, if only we had a manual.
There's nothing we can do here. I'm going to try and find them.
Wait! You don't know those corridors.
I got lost in them when I first came into the Tardis
- and I can tell you they're a nightmare. - Then you'd better stay here.
I'll come with you.
Wait a minute!
"Tardis Information system. Ready for entry."
A databank!
I left a waistcoat like that on...
- Ever been to Alzarius? - I was born there, Doctor!
Really?
It's a small universe, isn't it?
I wonder, boy, what would you do if you were me, hmm?
Or perhaps I should ask, what would I do if I were me.
(CHUCKLES)
Will it tell us how to fly the Tardis?
I'm sure that's in here somewhere, once we find the index file.
How do we find the index file?
Of course, if we had an index file,
we could look it up in the index file, under index file!
- What am I saying? I'm talking nonsense. - Recursion isn't nonsense.
Eh?
That's an example of recursion. When procedures fold back on themselves.
If you had an index file, you could look it up in the index file.
If.
My dad used to say that "if" was the most powerful word in the English language.
Recursion's a powerful mathematical concept. But I don't see how it can help us now.
If...
I-F! Stands for index file!
Not far now, Brigadier, if the Ice Warriors don't get there first.
Oh, no. Oh, dear.
We've wandered into the wrong corridor! We must be close to the main Tardis drive now.
- Jamie! Jamie, you go back! - No, I have to stay with you, Doctor.
No, nonsense, be sensible, go back!
When I say run, run!
Don't you understand?
The regeneration is failing.
I-F. It works. Let me have a go on it.
- Look up destination setting. - Right. D-S.
You know, once you get into it,
this whole funny system on the Tardis does start to make a sort of weird sense.
Except this.
"Tardis flight data. Programmed journey. Departure: Earth, Pharos project.
"Destination: Hydrogen in-rush: Event One."
Adric! Adric, not that way!
Adric. I remembered his name.
Seems the old Doc is coming unravelled in more ways than one.
Look, you'd better go back to the console room.
We're on a programmed flight. We won't crash. At least, I don't think so.
DOCTOR: Adric!
That's the trouble with regeneration.
You never quite know what you're going to get.
No.
Dear me. Needs a drop of linseed oil, though.
(PANTING)
No, that looks like the end of the trail.
This part of the Tardis can't have been used for centuries.
- It does go on and on. - Deeper and deeper.
Yes, I get that feeling, too, that we're going downwards.
MASTER: (CHUCKLING) Oh, no, you can't escape.
You're mine, Adric. Mine!
Until we have completed our final task.
Well, I suppose I'll get used to it in time.
(FOOTSTEPS)
(DOOR SHUNNING)
That's it. That's the door!
This way, come on!
- Doctor! - Thank heavens.
The Zero Room door, I heard it slam.
- Doctor, are you all right? - Fit as a fiddle, Vicki
but something very peculiar is going on in the Tardis.
The Zero Room. Have you seen it anywhere?
- I think the noise came from this direction. - Good. I'll follow you.
Must be around here somewhere.
- Doctor? - Hello, carmine seepage.
Actually, Doctor, it's me. My lipstick. We passed this way before.
Oh, that's a relief. I thought the Tardis' auto-systems were playing up again.
Dreadful. Always going wrong.
It's time we went to Logopolis to get it all sorted out once and for...
We've been already, Doctor.
Doctor? What does the Zero Room look like?
Zero Room? Oh, it's very big.
Empty, sort of grey...
Pinkish-grey.
TEGAN: Come on, Doctor, through this way.
Thank you. You must be Tegan.
Works even better if you close the doors, Nyssa.
- It smells like roses. - Yes. I've never quite understood why.
It's quite peaceful, isn't it?
Peaceful...
- Doctor, it's like... - Like Traken used to be.
- Will you have to stay here long? - Oh, just until my dendrites heal.
The nervous system's a very delicate network of logic junctions.
NYSSA: The synapses, yes.
Oh, yes, I was forgetting, Nyssa, bioelectronics is your strong point.
Yes, well, my tussle with the Master came at precisely the wrong moment.
When the synapses are weak, they're like radio receivers,
picking up all sorts of jumbled signals.
I get it, the Zero Room cuts out all interference!
Completely! Even the gravity's only local.
- Goodness me, I'm tired. - NYSSA: But there isn't even a bed.
Bed? Oh, I don't need a bed. Not in the Zero Room.
- One of the advantages of stark simplicity. - Can anybody do that?
You don't do it, it just sort of comes to you.
Like sleep. Very like sleep.
We only just made it to the Zero Room in time.
This regeneration is going to be difficult,
and I shall need you all. Every one of you.
You, Tegan, you have it in you to be a fine coordinator.
Keeping us all together during the healing time.
Nyssa, of course, has the technical skill and understanding.
All the information you need is in the Tardis databank.
I'm sure you can find your way to it.
We already have, Doctor.
Good, good. Of course you have.
And Adric... Adric with his bad_e for mathematical excellence,
Adric is the navi_ator. He knows the way.
He knows me, my old self.
Adric, you must help me heal the disconnection.
Your role is very crucial.
Adric.
(GASPS) Adric.
Adric. What are you doing up there?
A trap! He set a trap. The Master!
NYSSA: The Master? Where?
Me! I'm the trap! I locked the coordinates. Event One!
TEGAN: Adric, hold on, I'm coming up to get you.
No, no, this isn't me, it isn't me! It's an illusion!
projection! Block transfer.
Tegan, the coordinates!
Horrible.
Escape... Must escape.
So, these simulated projections are real enough to have a will of their own.
(CHUCKLING) Almost.
Can't... Can't reach me in the Zero Room.
Is that what you thought? Well, my dear young man,
it was your own computational powers that made the block transfer possible.
If escape were that easy, Adric, we could all be free of this nasty world.
Now, we must save your energies. There is so much yet to be done!
We can't tell him now, he's in a dangerously unstable state!
Adric was trying to warn us.
The coordinates. And something about a trap.
You stay here and keep an eye on the Doctor.
- Where are you going? - Console room. Look after the Doctor.
(KNOCKING)
That's odd.
Poor Adric. If only we could do something!
(DOCTOR MUMBLES)
What's the matter?
Sorry, I didn't mean to wake you.
There seems to be something distinctly wrong. I can feel it.
(BELL TOLLING)
Shh! The Tardis Cloister Bell. Imminent disaster.
- For us? - Oh, worse than that.
The Tardis is in danger. Who's in the console room?
- Nyssa. - And Adric?
- Adric's... - Well, is he, or isn't he?
Well, Doctor...
TEGAN: No, you can't go out there!
- Adric isn't what? Tell me! - It doesn't matter.
Look, you stay here. I'll go. After all, I am the coordinator.
"Hydrogen. Abundant element.
"Highly explosive in the presence of oxygen.
"Believed to be the basic constituent out of which the galaxy was first..."
Oh, this heat!
Has something gone wrong with the Tardis air-conditioning?
Of course, that's it! It's not the Tardis!
- Well, what else could it be? - Outside! You'd better read this.
I've got to do something.
Event One.
A trap, Adric said. This is a time machine.
And we're travelling backwards in time! Back to the first event!
The creation of the galaxy out of a huge in-rush of hydrogen.
We're heading straight into the biggest explosion in history!
(EXPLOSION)
Farewell, my friends.
Farewell forever!
(MASTER LAUGHING MANIACALLY)