3RD NATIONAL MEDICAL CENTER
WATER DISTRIBUTION STATION
DO NOT DISCRIMINATE DISTRIBUTE FAIRLY
Please take part in the abolition of the classification.
We need your signature, sir.
We need your signature.
Thank you.
This is an announcement for all patients of the Third National Medical Center.
The Third National Medical Center promises to provide
the best care in order for you to return to your daily lives.
If you have any questions during your stay, feel free to…
You'll need a higher water classification to stop her condition from worsening.
If her condition worsens,
she may lose her legs forever.
There isn't much we can do
with the class you currently hold.
THE TRUTH COMES OUT
That's water.
It's water.
It's ordinary, yet it's unusual.
What's ordinary about it and what's unusual?
Its solubility, surface tension,
and other characteristics are like water.
But the mass and the density aren't.
There was no microorganism found, so it's closer to distilled water.
Yet it's bigger in atomic weight like heavy water.
But it's not heavy water.
It froze at a temperature much lower than water.
It froze at about minus 80 degrees Celsius.
It became less active as the temperature dropped.
But it's still water.
BALHAE LUNAR RESEARCH STATION
I'm way too frightened to watch this.
Make sure your anchor is rock solid.
It'll be over if you slip.
Once you're there, you'll see the power to the mechanism.
Once you turn that off, I'll begin revising the protocol.
You can replace the panel while I do that,
and once I give you a sign…
Hey.
What's happening?
That's…
-Try to do whatever it takes to stop it. -I'm trying.
What? Why's the elevator moving?
It's completely out of control.
Captain, you have to avoid it.
Put the emergency brake on.
Yes, sir.
The emergency brake is down too.
Captain, you need to move!
Wait, no!
-You need to move, sir! -Captain!
Captain. Are you okay?
What?
What's going on?
Is it working now?
I think so.
Captain.
I'm fine.
What happened?
I'm not sure, Captain.
It may be malfunctioning due to the unstable power.
I thought the elevator wasn't working. Why would it suddenly do that?
Captain. Are you okay?
I'll go to you, Captain.
Drop the rope.
Throw the rope.
-Pardon, Captain? -Throw the whole thing down!
What's going on? Captain?
What?
Captain!
-Captain! -Captain!
-Sir! -No!
-Damage detected in the oxygen system. -Captain.
-Can you hear me, sir? -Damage detected in the oxygen system.
Sir!
Sir?
Captain! Are you okay?
You have to come to your senses!
Answer us, Captain!
Captain!
Are you okay, sir?
I'm fine.
What a relief, sir.
I was worried something might have happened to you.
I'll finish up and return.
Oxygen level at nine percent. Impairment to thermoregulatory control.
Captain,
you can't proceed any further.
You'd better return.
I'm okay.
Damage detected in the oxygen system.
I found it. What's next?
Pull down the bottom lever to replace the device,
then turn off the power switch on the upper right.
Signal detected. Revising the protocol.
Rebooting.
One minute until the system reboots. Please replace the panel.
It's the second panel from the left.
Damage detected in the oxygen system.
Panel replaced.
Thirty seconds until the system reboots.
But of all elevators,
why on earth did the elevator in that shaft move?
Exactly. I can't control it or spot the error.
This place has bad feng shui.
Things went haywire from the start.
Connect life support system immediately.
You need to come back right now, sir.
System rebooted.
Turn on the switch and lever in reverse order.
Connect life support system immediately.
Sir.
You have to come back. Can you make it?
Connect life support system immediately.
You need to come up now, sir.
Connect life support system immediately.
-Captain. -Captain!
-Sir! -Are you all right?
Oh, no.
Chief Gong!
Captain!
Do you see the Captain, Chief Gong?
Captain!
Sir!
Even if its molecular structure is different from Earth's water, it's water.
And we saw obvious signs of drowning in the bodies.
But how was that much water stored in his body?
Exactly.
At first, I thought it could be secondary drowning.
But think of Soochan. No way.
Secondary drowning?
There are different types of drowning?
The water that gets into your lungs
can cause pulmonary edema, brain damage, respiratory distress, and more.
It's when you get water in your lungs, but you don't realize it.
It causes death later.
Does that mean you drown because of the water in your body?
How long does it take
for secondary drowning to show symptoms?
It differs by case.
It could show in under an hour.
At times, people collapse in a day or two with difficulty breathing.
But the amount of water Soochan threw up…
Yes, it's way too much to say it was all in his lungs.
How can the amount of water in his body explode in quantity
and infiltrate his throat and lungs? That's impossible.
But the water
did not increase in quantity after his death.
So?
It multiplies rapidly once the host is infected,
then it stops its activity when the host dies.
Are you saying this water is a virus?
Captain.
Captain, are you all right?
What happened?
You lost consciousness due to lack of oxygen.
Why don't you stop by the infirmary first?
I'm fine.
-And the comms? -We're trying.
Are those all types of viruses and germs?
Nothing matches.
I'm sure he was infected by something.
If it's not in our data, it's more likely to be a type of extraterrestrial virus.
Even if it is an extraterrestrial virus,
did it really kill everyone five years ago?
The others are all fine.
That means it can't be airborne. He likely caught it through contact.
So how did it spread so quickly five years ago?
What's wrong?
I can't remember the last time I've seen such clear water.
Captain.
Are you all right?
How are things going?
Comms are still down.
It doesn't work?
The DU wasn't the problem?
The panel was replaced,
and the system was rebooted without a problem.
Yes. The system shows that everything is fine,
but there's no exchange of signals.
Maybe…
The system itself could've been damaged because of the accident.
You said the system was fine.
Even if there's a problem, the system may not be able to detect it.
At the moment,
it's impossible to send or receive any signals.
Any backup radios?
Every single communication device in this station is down.
I've been searching for a signal internally,
but I haven't detected anything yet.
I should've checked that first.
Don't mention it.
I should do whatever I can. I couldn't just space out.
UNKNOWN SIGNAL DETECTED
What's that?
Wait, we got something.
We caught a signal.
UNKNOWN SIGNAL DETECTED
Could it be one of our communication devices?
No.
It's clearly coming in from the outside.
But none of us are out there right now. Right?
Where's it being sent?
Storage Three.
The murderer always returns to the scene of the crime.
Who's sending the signal from the outside?
I'm sure those jerks are with the rat hiding in the station.
If the intruder had a separate communication device,
our situation is most likely exposed to them.
Why is nobody here?
Why does he have something like that?
I didn't like him from the moment I saw him.
But why did the intruder kill him?
You're right. Aren't they on the same side?
I don't know what all this is about anymore.
Can you find out who sent these?
I think he used an older model for security reasons.
It's not likely, but I'll give it a try.
I've seen the men of RX using these.
Can we communicate with Earth using this?
Yes, it's more than possible.
Let's try to contact Director Choi.
Yes, sir.
He probably fiddled with the biosignal to lose you two.
And I fell for it.
Did you find anything on the cause of their deaths?
They all died due to the rapid increase of water from inside their bodies.
We're still trying to find the cause.
This is odd.
Everything is connected.
This is really odd.
There is no reason for--
It's connected. We're connected.
CONNECTION ACCEPTED
Captain, we're connected.
We'll talk again.
Three died, and one of them was a spy?
It's the worst report I can imagine.
You're the one who approved the co-pilot to be changed right before we departed.
Once the Inspection Department hears of this,
they'll conduct a thorough investigation on the reasons for the replacement.
Of course, it'll include me.
Is there a possibility that other members could be in league with him?
It cannot be excluded.
What's important is
catching the intruder who took that sample.
Is it more important to stop the intruder than to retrieve the samples?
You of all people should know how valuable these samples are.
I wouldn't have started this if I'd let anyone else have it.
We need access to level-one areas to conduct a thorough search.
CLOSED
ENTER THE CODE
Dr. Song, where are you?
Oh, right.
I'll be there soon.
They've been talking for a long time.
"We sent a rescue ship. Return as soon as possible."
I hope that's what she says.
It's all fucked up, man.
A survivor?
I don't agree with Dr. Song's theory,
but there were questionable aspects when the co-pilot was killed.
What do you mean, Captain Han?
There are no signs of radiation leaks in the station.
Were you already aware of this?
What?
You seemed to be very shocked when I mentioned the spy,
but you seemed indifferent when I mentioned
that there could be a survivor.
You're the first person who told me
that there are no signs of radiation leakage.
And…
it's because you mentioned someone could be alive.
Although it was closed for five years.
Captain Han, perhaps you're starting to believe Dr. Song's absurd theory.
If you're hiding any information that could jeopardize my crew's safety,
the success of this operation is no longer my interest.
As…
the chief officer of this mission,
I wish for the crew's safe return more than anybody.
There's no reason for me to hide anything from you.
You must complete the mission successfully.
Not only will it save your daughter,
it could also save
all of us.
There is absolutely no virus in this thing.
This is the last one.
The last what?
How long do we have to do this?
Why?
One second.
What is it?
What are you doing?
I want to try something.
What's this?
Why is it doing that?
It's dividing.
What is this? Is something wrong?
-Move back. Step back. -Why is it doing that?
One second.
Wait.
It stopped multiplying.
What is this?
Why…
Why did it do that?
Blood stays alive for a while out of the body.
That's why it showed a reaction.
This must be what caused Soochan's death.
Once the host died,
it stopped multiplying.
Water that multiplies…
Then, is there a delay in schedule for the rescue ship?
Yes, we need more time to find the intruder and the sample.
How should we capture the intruder?
They should be kept alive, but if you retrieve the sample,
you may kill the intruder.
We'll search for the intruder.
-Taesuk and Sun, come with-- -Captain.
She's doing this
because we have no lander to take us back.
She's threatening us with the rescue ship.
This isn't how she should ask us to extend our mission.
It's not how things are done.
Then what do you suggest?
I'm not saying I have a particular plan.
Let's stay focused.
Yes, sir. I'm sorry.
Is it water?
The sample we're here to retrieve.
Is it water?
You knew.
I'm sure you are aware of
the space resource development that countries were competing over.
Nobody was interested in the Moon.
Nothing in particular was found, so most countries had pulled out.
However,
there is a reason why we never gave up on the Moon.
We actually found
something very profound.
What is it?
Water.
It was a perfect chance for us
to catch up to other developed countries as a newcomer in the industry.
Dr. Song Wonkyung called it…
lunar water.
Balhae Station was a place where they studied the lunar water.
Is there really water on the Moon?
That's everything Director Choi told me.
She said we found water on the Moon,
and if this research is a success,
we could save all of humanity.
Why did you hide this from us?
Why did you go so far to keep this a secret from us?
It's obvious what would happen if this information is leaked.
Lee Gisu is dead, but someone is bound to come after us.
No, the real reason why Director Choi didn't tell us about the sample
is because that water is what killed everyone at Balhae Station
as well as Soochan.
What do you mean?
I think we know why Soochan died.
It looks like
Soochan was exposed to the lunar water.
We aren't completely sure,
but the lunar water seems to act like a virus.
It multiplies until it takes the host's life.
It multiplies?
The water multiplies?
Yes.
It multiplies endlessly.
I'm sure it seemed like an amazing resource.
If we could control its multiplication,
if we could commercialize it,
they probably thought it could save mankind.
If that's possible,
it should happen.
That's what my sister wanted.
Dr. Song Wonkyung.
Yes, Dr. Song Wonkyung.
My sister
wanted that too.
Hey.
It's the Moon.
Do you see those dark spots?
It's called "The Silent Sea."
Long ago,
Galileo thought that was a sea.
That's why he named it the silent sea.
But once we got to the Moon,
there was no sea.
Just like how it is here.
I heard all of this used to be the sea a long time ago.
The Earth will end up like the Moon.
Right?
Don't worry.
One day, I'll fill up this entire place and turn it back into the sea.
You will?
Yes.
Wait and see.
One day,
it'll happen.
I can see why everyone risks their lives to come and get it.
If you succeed, you'd make a fortune, right?
But it still can't be controlled.
No, it can't be controlled.
We don't even know how you can get infected.
What about us? Are we all right?
No.
Whatever.
I'm just going to hold out until the rescue ship comes and go home.
If we can keep the lunar water under control,
we'll get to live in a world without any water classification cards.
How are we going to create a world like that?
She never told us a thing about our mission,
so we ended up losing Soochan.
I was told it's still under research, so the substance is very unstable.
It's susceptible to external stimulus, so it had to be kept at a low temperature.
That external stimulus
is coming in contact with a living organism.
The researchers here were infected by the lunar water and died,
but the government covered up everything to hide the existence of lunar water.
We don't know the symptoms or how you get infected.
There are too many things we don't know.
I'm not angry at you or blaming you.
I just want information.
I was against it.
I found out you were Dr. Song's sister
and was reluctant to have you on my team.
Why did you come here?
My sister called me here.
What do you mean?
You said
Director Choi gave you the code to restricted areas.
The data storage of Balhae Station
is inside the main lab.
And I need level-one access to get in there.
I mean, her sister was the chief here.
How can she not know a thing about lunar water?
Are you suspicious of her?
No, that's not what I meant.
I'm just saying,
I don't get
why she took up this mission.
She would've been curious, and it would have felt unfair.
If your family died and you don't know the reason,
if their death is deemed meaningless and nothing changes,
I would find everything futile.
And Soochan
would also feel it's unfair.
But I'm not saying
I'll put that before my mission.
How did you know about this?
I just got lucky.
Do you think you’ll find something in here?
The answer.
You cannot enter the data storage without authorization.
I know that.
So let me go inside by myself.
I don't trust you yet.
CLOSED CODE VERIFIED
OPEN
This is a huge amount of data.
There should be a browser somewhere.
What is this?
These are plants.
ALL CHARACTERS, LOCATIONS, ORGANIZATIONS, NAMES, AND INCIDENTS
ARE PRODUCTS OF THE IMAGINATION OR USED FICTITIOUSLY.
ANY RESEMBLANCE TO REALITY IS ENTIRELY COINCIDENTAL.
Subtitle translation by: Eun-sook Yoon