Good morning, campers.
There is damage here. It appears to have been done by Goa'uld weaponry.
I do not believe this battle took place recently.
- No bodies. - Daniel,
do you recognise any of these symbols?
No. This place is definitely alien.
- I wonder what's behind curtain No.2. - Take Carter and check it out.
Teal'c, you ever see anything like this before?
We must return to Earth as quickly as possible.
Why? What is that?
It is the symbol of Korosh-ni.
It is for any Goa'uld or Jaffa who may pass through the gate.
Loosely translated, it means turn back.
Does it elaborate?
It is placed on worlds Goa'uld destroyers have wiped out and left contaminated.
This planet's entire surface will be, in your terms, radioactive.
No one will be left alive.
This place is not safe.
- I think this is a lab. - How do you know?
These are things they brought from other planets to study.
They're all tagged. This is a Turkanese mask,
this is a clay cone from Lagash with cuneiform symbols on it.
Carter! Daniel!
Found the souvenir shop, sir.
- We're outta here. - What? Why?
This is a treasure chest of artefacts from diverse human cultures.
Daniel, I don't wanna hear it. Let's go.
You don't wanna hear it.
Daniel, we're leaving! Let's go!
You guys, I need a hand with this thing! It's heavy, but we have to take it...
back.
Jack?
Sam?!
Teal'c?!
Oh, I really hate it when this happens.
Close the iris!
Hands on your head, now! Or we will open fire.
- What's going on? - Identify yourself.
Daniel Jackson, SG-1.
General, what's this all about?
"General"? Do you see stars anywhere on my uniform?
- Colonel, he says he's on SG-1. - "Colonel"?
How did you get an SG-1 remote iris-deactivation device?
What are you talking about?
Unauthorised incoming travellers.
Who the hell are you?
I am Dr Daniel Jackson, SG-1. I need to see Jack O'Neill.
- Ask Sam Carter! - On the table!
I'm not a Goa'uld! Don't give me that.
Where's Dr Fraiser? Don't give me that!
I am Dr Daniel Jackson.
I need to see Colonel O'Neill.
Do you mean General O'Neill?
Hello?!
I have to speak to someone!
- Catherine. - You know me?
Of course.
- You don't know me? - Dr Daniel Jackson. Linguist.
Ancient Egyptian historian. Better known for some of your more radical ideas.
At the moment, I'm more interested in how you came through my Stargate.
How I... Your Stargate? What the hell is going on here, Catherine?
I'd prefer you address me as Dr Langford.
You were wearing a remote device.
You had SG-1's code. How did you obtain it?
How did I...? How do you think I did it?
I left from here, Stargate Command. Today. A few hours ago.
I went through on a mission to P3R-233.
What are you talking about?
You've never been in this facility until now.
OK.
Um... I figured out how to work the Stargate.
You recruited me to translate the cartouche found at Giza.
I went on the first mission through the Stargate to Abydos.
And unless the last two years have been some wacky dream,
I am a member of SG-1.
Not as far as I'm concerned.
- What?! - I supervised the team
that translated the cartouche at Giza.
- You did?! - I admit we referenced your work.
I even went to one of your seminars to ask you to join us, but you said no.
- 1 did? - You were quite rude, actually.
I was?
The MRI confirms you are not a Goa'uld.
- Could I see Captain Carter? - Samantha Carter?
- Yes! - She's not in the military. She's a doctor.
PhD Astrophysics. She's attending to more important business at the moment.
Don't you have any explanation for this?
God, no!
Catherine! I mean, Dr Langford. No, this doesn't make any sense!
I know you. I belong here!
You don't!
Excuse me?
You're retired. At least, the air force made you retire.
You're supposed to be at home, living happily ever after with Ernest.
What?
The man you were supposed to marry in 1945.
We've only got 50% of the list through to Beta site, General.
Voyager is still en route.
- Excuse me. I know you're busy. - It's all right, Catherine. What is it?
I think you should meet this young man, Jack.
- Now? - How much time do we have?
Why?
He... knows things.
- Jack! - Look, we're in the middle of a situation.
I don't know who you are, but Dr Langford says you might be able to help us.
OK, this is starting to get a little bit spooky.
A few hours ago, everything about this place was different.
I mean, well, not completely different. I mean, you're still you...
Sort of.
- What can you tell me about the Goa'uld? - What?!
The Goa'uld. You know who they are?
Uh... yeah.
Tell me what you know.
OK. Maybe I've completely lost my mind here,
but as far as I'm concerned we know each other very well.
You know everything that I know.
I am a member of SG-1 with you, Captain Carter and Teal'c!
Where is Teal'c?
Big guy. Gold emblem on his head. Goa'uld in his stomach.
- A Jaffa? - Yes. He's our friend.
Get this man outta here. Now.
How'd he come to the gate? How does he know all this?
You say you solved the gate without me.
Did you still go to Abydos intending to blow up a nuclear device?
- How did you know that? - You were willing to commit suicide
because your son had recently died. He shot himself with your gun, right?
I swear I didn't tell him anything.
- So, did you still go to Chulak? - What is Chulak?
- The Jaffa home world. - You know the symbols?
Yes.
- Do you want me to write it down? - Yes!
So, if you've never been to Chulak, you've probably never... met... Teal'c.
- "Teal"? - No, Teal'c!
Everything's screwed up. Why?!
Sam!
- Who is this? - Dr Jackson.
He came through the gate with an SG-1 remote code.
Report, Doctor.
We've lost Washington and Philadelphia, sir.
I'm sorry. What do you mean by lost?
Show him.
Every one of those red dots is a destroyed city.
Dr Carter, there's another report.
Military efforts to engage the alien ships have proven inconsequential.
- The Goa'uld? - The ships appeared four days ago.
They have slowly begun systematically annihilating all signs of civilisation,
starting on the East Coast
and moving west with frightening inevitability.
There has been no response to attempted communications with the aliens.
Thus far, they have left no survivors
in the wake of their seemingly unstoppable wave of destruction.
I feel like the victim of the biggest practical joke ever.
You got all this on the alien planet?
Uh, yeah, with the exception of the gun and the grenade.
I found this lab. They obviously collected things they found on other planets.
There was this mirror. Could've been made of Nagahdah, the gate element.
Jack said we were leaving. I touched the mirror.
Interesting. What is it?
I have no idea.
- You said you touched a mirror? - I touched that thing first.
It turned on, I heard a noise, that's when I noticed the shimmering.
Maybe this is what controls it.
When I touched the mirror, there was this surge.
Like an electrical shock, just for a second.
And then I went to find Jack, Sam, and Teal'c.
- He's the Jaffa? - Yes!
But I couldn't find them. It was like they were gone.
So, I figured they left without me. I dialled Earth's address, came through, and I...
What the hell are they doing down there?
Chevron one encoded.
Chevron two encoded.
Chevron three encoded.
Isn't our mission to get the genesis list through to the Beta site?
I think we'll try to stop the attack on Earth first.
Genesis list? Beta site? What does she mean?
We're evacuating everyone we can to another planet.
World leaders, scientists, doctors.
Chevron five encoded.
You're sending a nuclear weapon to Chulak?
- You got a problem with that? - The Jaffa are just slaves.
Try to comprehend what's going on here.
We estimate the death toll to Earth as 1.5 billion.
Who do you think is flying those ships, trying to blow up our world?
Give me one good reason why I shouldn't be striking back.
Chevron seven locked.
They have no choice.
- Send the bomb. - Proceed with deployment.
Proceed with evacuation until that next warhead is ready.
There are innocent human beings on Goa'uld planets.
Unless this man has more information we can use, I don't wanna see him again.
This isn't happening, this is nuts, this isn't happening...
Is it... is it possible that the Stargate... malfunctioned or went haywire,
and I came through into a totally screwed-up different version of Earth?
No, I doubt that. The Stargate allows us to travel across great distances,
but it doesn't take you to an alternate reality.
Alternate reality?
Scientists have theorised that there are an infinite number of dimensions,
each containing a different possible reality.
Well, it sounds like I theoretically, possibly actually found one.
- One what? - What Sam said. An... alternate reality.
That would explain why everything here is the same, but different.
The theory is that there are an infinite number of alternate realities.
Some are very different, some are almost identical.
That has to be what this is!
This isn't my world at all. This is some sort of...
other dimension?
The Stargate wouldn't cause that.
- Maybe the Stargate didn't cause it. - What are you suggesting?
He found a mirror, possibly made of naqahdah, on P3R-233.
- All this happened after I touched it. - P3R-233?
- Have you been there? - Yes!
Offworld activation.
Close blast doors. Keep the iris sealed.
Receiving coded transmission from Air Force One.
Notify General O'Neill. Get the genesis travellers ready.
Right.
Current address unknown. Phone number unknown.
Last place of residence...
Egypt, as of 1997.
What?
- I think I'm dead. - What?
The me in this reality.
What is Voyager's status?
The president's plane is ten minutes from Peterson Air Force Base.
- Another coded transmission. - Relay it through the decoder.
Enemy craft. Pursuit. Cannot evade.
Surface radar is tracking.
- That's one of their big ones. - Look how fast it's moving.
Under fire! Help... us!
- It's heading straight for us. - Confirm, airman.
- ETA, one minute. - Dammit! The evacuation gave us away.
Intelligence confirms that enemy fire can reach us, even this far underground.
We're stuck here.
Enemy ship is slowing. Visual tracking in 10 seconds.
If they fire on us, chances are we won't even feel it.
The blasts on the East Coast were equal to 200-megaton nuclear warheads.
- It's not gonna fire. - What?
It's landing.
The surveillance cameras show Jaffa assembling what appears to be a weapon.
They're coming in the front door.
Position automatic weapons here. And men in all these halls.
Cut off access to this level. Blow the secondary elevator shaft now.
If the men at the surface have to fall back,
there's only gonna be one way down.
I want all nonessential personnel through the gate to the Beta site ASAP.
Dr Langford, that includes you and our guest.
Sir, the Goa'ulds have kept a wormhole established from offworld.
Probably because you sent that bomb.
The point is, unless we get a chance to open the gate from here, we're all stuck.
- Recommendations? - Normally, when we have full power,
we can only keep a wormhole established for a half-hour.
There may be a restriction on how long the Goa'ulds can keep theirs active.
- So there's a time limit? - Right.
- Start it up. Count to five, then blow it. - Yes, sir.
Good luck.
- Let's go. Take it up. - Yes, sir.
This sounds like a derivation of ancient Egyptian.
We couldn't recognise it.
Oh, you didn't learn how to speak it aloud on Abydos.
- Where did this come from? - A transmission about three months ago.
So, why are you showing this to me now?
The transmission came from the same quadrant of space as P3R-233.
Where your mirror is.
We went to 233 after we received that, but the civilisation had been destroyed.
We didn't find any mirror.
"Beware the destroyers.”
233's aliens must've sent out the warning before their civilisation was destroyed.
- And the rest? - It says "They come from", but...
the sentence is incomplete.
There's just more sounds. Pulses or beats.
We've analysed them.
They're divided into groups: 3,32, 16,8,10 and 12.
- That's six numbers. - Yeah.
That's a Stargate address, just without the point of origin.
"Beware the destroyers. They come from 3, 32, 16, 8, 10 and 12."
The aliens found out where the Goa'uld attack originated?
- Like a Goa'uld home world? - Or at least a military base.
They've assigned a number to each symbol on the Stargate. It's a code.
We just figure out the symbol they use to represent 1, and start counting.
The only unique symbol they would have is for 233.
That symbol may not be on our Stargate.
Except I have the alien gate on tape.
What?
The gate is off!
- Dial the gate for the Beta site. - Chevron one encoded.
If we dial before the Goa'ulds re-establish a wormhole, we can get outta here.
- Chevron two. - Can they dial in?
Yes. The seventh chevron must be locked to stop an incoming wormhole.
Chevron three encoded.
- Everybody ready? - Sir!
Let's do it, boys.
Chevron five encoded.
Come on, come on, come on.
- No! - Offworld activation.
You'll have to make the computer dial in faster.
How long can the Goa'uld keep a wormhole active?
Based on their last activation, they can keep it open for...
38 minutes.
We may not have that much time.
Fall back!
Go! Go!
Seal it off and move down!
This symbol has to be the point of origin.
- How's it going out there, General? - We're getting the crap beat out of us.
It'll be 25 before we can try again.
And Dr Langford has presented us with an interesting dilemma.
She thinks we have the address to a Goa'uld home world,
possibly where this attack originated.
- We'll send a bomb through. - Excuse me?
Sorry. I know I'm an outsider, but what good will that do?
Forget that it won't change anything here. How do you know they don't have an iris?
- This could all be for nothing. - We only have one shot at dialling out.
If we use that one chance to dial a Goa'uld world, we'll never get out.
- My God. - What the hell's that?
My reality.
We are actually looking at ourselves in a parallel universe.
Another version of our lives that actually exists.
- It's incredible. - It's supposed to be theoretical.
Not any more. What began with Einstein's theories about relativity...
- Who is this? - That is Teal'c.
Big guy, gold emblem on his head, and Goa'uld in his stomach.
We just saw him on the security camera. He's the Jaffa that led the invasion.
He was the first prime of Apophis. He'd lead the most important mission.
This may sound selfish, but where I'm from none of this has happened.
- My Earth still has a chance. - Do you want to explain that?
If this is the address of the Goa'uld world where this attack originated,
and I can tell my world, maybe I can stop this before it starts there.
What makes you think the Goa'ulds will try attacking Earth in your universe?
We've pissed the Goa'uld off just as much as you have.
Wait. Let me get this straight.
You want us to give up our last chance to hit the Goa'uld
so we can save ourselves in a...
- What? - Alternate reality.
- Not just you. Everyone on Earth. - Your Earth.
The Jack O'Neill I know would do it.
Apparently, you and I have never met.
No, I guess not.
Look, because I came here I have seen what can happen.
I have a chance to stop this happening to the Earth I come from, if you help me.
How much time, Doctor?
22 minutes.
So the argument is academic. We can't hold them that long.
- Maybe we can buy some time. - How?
Not how. Who.
Whoa... You're kidding, right?
You saw the video. In my reality, Jack convinced Teal'c to betray Apophis
to save our lives.
Teal'c gave up everything so we could free his people from slavery.
It doesn't look like we could help him.
We sent a bomb to his planet. There may be nothing for him to save.
Not in this universe.
- You expect me to explain all this to him? - He's smart. He'll understand.
How do you know he's like the Jaffa you know in your universe?
Not everything's the same here.
No, it's not. But it is close.
I know what I am asking here, it's insane.
Look, if you don't want to help me, I understand.
It's your lives, and it's your world.
All I have to do is buy a little time? A few minutes to get the gate open, right?
That video of that Jaffa and you should catch his attention.
You're going to talk to him about alternate realities?
Do you really think he's right about this Jaffa?
He was right about my son.
Thank you.
I think this is where you all wish me good luck.
Jack...
Come here.
I take it they're not engaged in your reality?
No.
The enemy will most likely penetrate this level any time now.
But every minute counts.
If we get the Stargate open, we will retreat through it.
But until then, we must keep them away from the control room and the Stargate.
- Understood? - Yes, sir!
Your efforts and dedication
have always made me proud to serve with all of you.
- Bravo Company, move out. - Formation three.
Kree shak!
Don't shoot! I'm unarmed.
I surrender.
- And you are? - General Jack O'Neill.
Commander of this base.
You're Teal'c, right?
- Hakka sha! - Arik Kree!
You'll be wondering how I know your name.
I've got quite a story to tell you.
I've got the dial-in time down by five seconds.
Now we need that wormhole to destabilise.
Airman, we're going to need all the help we can get out there.
Set the autodestruct sequence to go off two minutes past
the window of opportunity for us to open the Stargate.
If the Goa'ulds want this place in one piece, I intend to disappoint them.
Destruct sequence activated.
What sort of deception is this?
I know it's hard to believe, but you guys are pretty advanced.
You must know this alternate-reality thing is possible, right?
1 do not.
Then how did this Daniel guy know your name?
He says the guy in this video -
you, I guess, in his world -
hates being a slave to the Goa'ulds.
Lies.
Look...
I know this sounds insane,
but you have a chance to change things in his world.
We just need a little time, that's all.
This guy Daniel says the Teal'c in his world is a good man.
That he betrayed the Goa'uld for a chance to free his people, his family.
Your wife. Your son Ryac.
We received word from my home world.
You sent a weapon of destruction there.
My people,
my family are dead.
Four minutes. You two get in the gate room.
- Catherine... - They need you at the Beta site.
- What about you? - I'll set the dial and join you. Go!
If this mirror is a doorway between dimensions, maybe I can send help,
or even have you come through to my Earth.
Wait. If your device is a remote control to the mirror, you may need it.
Go ahead. I'll get it.
Thank you.
You'll help reunite me with Ernest in the other world?
I guess, in the grand scheme of things, we're even.
Fall back! We have to fall back!
Two minutes!
I surrender. I've information for Apophis. Technology he will want to know about.
This is a remote control to an interdimensional portal.
I can tell Apophis how to find it.
Ashac tree-ac!
Thank you.
Oh, yeah.
I also wish to blow us all to hell.
Time's up!
Come on!
Autodestruct in one minute.
Autodestruct in 30 seconds.
Autodestruct in 10 seconds.
9,876,
54,32,
1.
- Any luck? - Nothing.
Help!
Daniel!
What the hell is this?
It appears to have been caused by a staff weapon.
This looks like a Stargate address.
- All right, let's get him back to Earth. - No, Jack!
We're all in very big trouble.
They're coming.