Kaz! Louis!
No, no, no, no, no!
They're not letting us back down there again!
I talked to the alien.
It looks like Sarah now - the girl I based by mermaid on.
We made a deal, Bea.
You promised to help.
I have to betray my friends.
Get them back!
It's time to save the world.
This is the only way!
Where are the rest?
Isabel and the others are back home - they're fine.
No-one's going in there.
The alien told us, if you don't go in,
and do this, the world's in danger.
Save the world? Are we taking that seriously?
But it's a trap!
What? Bea!
If you go in, you'll never come back out.
These things were made to test you all,
to see if you could change things in the real world.
Is it true? Can you?
Show me.
Meg will become more powerful, and more dangerous.
The rest of you, too.
They want to take you off our world to protect us from you.
To protect you from us?
Didn't you imagine a dinosaur in your alternate by accident?
What if Meg does that right now, and someone gets hurt?
Are you in control of it?
Meg! Meg get away from it!
If you go in there, you'll never come back.
Meg, come on, don't be scared.
I'm not scared! I just don't want anyone to get hurt.
I can feel it already.
Building inside me.
Meg! Don't! No!
If any of you say I'm not one of you, I swear....
It's gone.
How are we supposed to get out?
We don't.
Are you mad at me?
You saved the world, you should be proud of yourself.
Don't.
I told you all the truth.
You brought the artefact here, you put Meg in an impossible situation!
Don't you think they might be right?
Look, she hurt you in the challenge, trying to protect you!
They said they would take you off our planet to monitor you.
At least you'd get your answers.
What?
You said, "they would"?
We're already off our planet, Bea.
All of this? We're on a spaceship!
Wait!
We're on a spaceship?
I didn't tell you that?
No! Because it's the kind of thing you would remember.
Why did you follow us in here?
Did you feel guilty, or something?
No! And it's not because I felt left out either.
Louis, how can we be on a spaceship?
I used to see you in here, a version of you.
And you led me to this hatch,
into the spaceship.
It holds all the Alternates, but it's closed now.
Look, maybe we're too dangerous and deserve to be in here,
but you don't.
I need to get you home.
They closed the hatch but maybe we can make a new one.
Aim right here.
What do you think they're talking about?
He'll be telling them they have proof now,
and that the authorities will finally listen.
People will be able to do something about this.
Steph and Daniel will go along because it's their only choice left,
and then, I guess those people will come and take it.
OK.
And what are we going to do about it?
So how does being back down here get us home?
When you left the facility, were the three Artefacts still there?
Er, yeah.
The alien stayed with them and sent us to the camp.
You want to try and use one of the other groups' Artefacts to get back?
Yeah.
I can't go back. You heard what it said about me.
It's true.
No-one has the right to lock you away because of what you can do.
You'll learn to control it.
We should go.
Come on!
Wait...
It's them.
They're coming for us.
Do you know where you're going?
Jay's Alternate is the best bet, we never found the other two.
It's a fairground.
Assuming the Artefact's still there, and we can still use it.
But do you know where we're going? Yes!
How long do you think we have before they get here?
What?
I heard something, like a buzzing sound.
ALARM SOUNDING
What does this mean?
It means we've got to go! Come on!
Back this way.
They're trying to stop us getting to the other Alternates.
I'm guessing they're not good.
Really annoying is what they are.
Run!
Go on! Find a way out.
I'll find you.
This spaceship is real and I can change things in the real world.
I'll hold them off.
I'll stay with you.
The barriers and the diamonds, they were leading us here.
I'm not going in there.
Kaz! She can't hear you!
What is it? It's an airlock. It's going to open!
Get me out of here!
You've been in here before? What was freaking Kaz out?
Something bad happened.
In there.
What's that?
Be careful not to touch anything.
We're in an airlock.
OK.
This is exactly where they wanted us.
They're coming.
Who's coming?
The kind of people I was trying to stop from finding the facility.
Aiden made a call.
A photo of that was enough to get their interest.
Alice! Alice!
Not this time.
They'll find a way back.
Not this time.
Aliens in films and comics,
they are always evil.
I always thought they'd be good.
Isn't it that what they think they're doing is good?
Just not good for us.
You never answered my question,
why you followed us in here?
Do you remember everything?
Since you got your memory back?
I think so.
That I kissed you?
Yeah.
I followed you in here.
Oh.
It's not here.
What?
Kaz, she got trapped in the airlock,
and Jay used a metal rod to open the door.
It's not here!
Change them into something!
What if we get hit and pop up outside?
Sh, I'm trying to concentrate.
Where did you get that?!
I imagined it.
It's almost as big as you! Can I have one? No!
Uh-oh!
What has a metal rod got to do with anything?
Jay needed something to open that door.
And then there it was, the perfect object,
like he imagined it.
Think of something.
This is still the Alternate.
If this isn't real, what is it?
I can't hold them off!
You play way too many video games.
Get back this way - now!
The spaceship - none of it's real. What?
I just imagined something and it popped up in my hand.
This is still the Alternate.
The alien told Bea that we'd also develop abilities like Meg.
How do you know it's not that?
I don't. Not really.
Don't go down there.
They'll be here any second.
All this, it's too obvious.
This spaceship is like everything that we've seen on film and TV.
What if it's a test?
Back when we first arrived,
we thought we'd accidentally broken into the spaceship, right?
Yeah, so?
What if we accidentally broke into the fourth challenge?
A challenge for what?
Maybe they think we're too dangerous.
And we have to prove to them that we're not.
And if you're wrong?
No!
No-one has the right to lock us away because of what we can do,
that's what you said.
We could change it into something.
We could stop them from taking us.
You mean destroy them?
Wait! Stop.
We let them take us.
If Louis is wrong, then this isn't a test.
At least we'll all be together.
Where's Bea?
Back with her parents,
wondering how she got there.
Isn't that your mermaid?
No.
What is this place?
Just somewhere to talk.
So, Louis was right?
The ship was a test, and we passed, so, can we go home?
We were sent to your planet a long time ago.
Because of our abilities, it was easy to blend in.
Sent here for what?
How can you truly understand another culture, Louis?
Do you read about it in a book? Or live among it?
They lived out their lives on your planet.
They had families.
They were happy.
They never went back.
So, what, some aliens spent their lives on our planet,
what's that got to do with us?
You're their descendants.
You're our children.
No.
The Artefacts sent out a sound to all those who share our DNA.
It drew the strongest together.
When you first touched the Artefact, it woke up that part of us
inside you.
So, you're one of the original four?
But I remained in the Artefact until it was time to bring you home.
Home?
This is an invitation,
to see where you're from.
To learn to control and develop your abilities.
You passed the test today.
But what about when you're all as powerful as Meg?
You're all going to get stronger.
More dangerous.
What if we don't want to go?
What is that?
They're getting ready to take the Artefact to some important people
who'll know who you are and what you can do.
If you go back, we won't be able to protect you from them.
You'll be on your own.
People in authority have been telling me what's best for me
my entire life, and you're no different.
We care about you.
So, let us decide.
You always wanted this, Louis.
To see what was out there.
Do you even want to go back?
We're almost there.
We'll only be a second.
Where do you think they are right now? Dragonfly?
I don't know.
But it's over?
I think it is.
Louis!
We've contacted their parents, but we think the important thing is
they come with us right now...
What was through the door?
I got sent back, I don't know what happened.
They let us out.
But, what they said about Meg? Why would they let you go?
They let us decide.
We might have stayed, but Louis...
wanted to come back.
They're going to want to talk to you.
Have you ever seen anything like this before?
Did they really come out of that light?
They'll want to know about the Artefact.
It's happening like she said it would.
Wait, we're talking like this in the real world.
Since we got back, I feel different.
You all feel it? Yeah.
Different, like Meg.
Is it happening already?
What if they test our blood and find out we're not human?
What happens then?
Couldn't we just go somewhere? Away from here.
Hang out and act like things are normal for a bit.
I'd like that. Me too.
Hey! We need to talk to you.
We have questions.
Where are you going?
I don't know.
Do you want to come?
You can't go! They just want to understand.
This needs to be explained!
Can someone go and get them, please?
I wouldn't do that.
You can't just leave!
Excuse me?
I said you can't just leave!
No-one gets to tell us what to do any more.