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The Moon Yang Ho, a fishing ship that set off from
Gamchun Harbor, Busan,
was on the 5th day of its way back
due to an engine breakage.
But on December 19th,
the ship sank 50 kilometers southwest of Ulleung Island.
All of the ship’s 129 crewmembers disappeared,
but one, who took a life-raft and was rescued.
Episode 1
Hey, hey.
You were here a few days ago...
Are you here to get therapy?
Are you OK?
Are you alright…
Center for Disease Control and Prevention
Welcome to the epidemiological investigation team.
Thank you.
-You said you quit residency after a year? -Yes.
Planning JTBC
After all that work?
The more time I spent, I felt like I fit better into research.
Executive Producer Cho Joon-hyung
It’s easier said than done…
That’s very courageous of you.
Production DRAMAHOUSE
Since I have seniority, can I talk comfortably?
- Of course. - Alright.
And you too, Mr. Kim.
Sherlock here is so formal. I don’t know about me.
Sherlock?
His nickname is CDC's Sherlock Holmes.
You’ll see when you meet him, but
there’s a monster in the office.
He knows everything about you.
Watch out for that guy.
He even knows when and where you last kissed your lover.
People never believe it.
Shall we test him?
Test?
How did you get here?
I transferred onto the bus from the subway.
Why?
- Number 3? - Yes
What did you have for breakfast?
That’s too hard.
Want to put 10 bucks on it?
I say he gets it wrong.
What did you have?
He’s really going to guess all of this correctly?
Just tell us.
If he gets it wrong, it’ll be so embarrassing for us.
I got here early, so
I had a cappuccino and bagel nearby the station.
Bagel?
Good morning, sir.
Mr. Kang, there’s a new employee here.
Hello. I’m Lee Na-hyun.
I’m Kang Ju-hun.
Please take a seat.
Mr. Kang, can you guess
how Ms. Lee got here and what she had for breakfast?
What? Why?
I’ll tell you why later,
but guess now.
You took the subway,
but got here earlier than expected...
So at the coffee shop near exit 4,
you had a cup of cappuccino.
Ah, and also a bagel, right?
You think you were being watched?
Don’t worry about it.
I think you have to tell her how you guessed.
- That’s useless - I’m curious, please.
Look at your shoes.
You got dirt on it right?
Sticky and dark mud.
The only place where you could’ve gotten that
is at the coffee shop in front of exit 4.
There’s sewage construction going on.
But how did you know about the cappuccino?
That was stretching it,
but I was sticking to probability.
Since you were nervous for your first day,
you probably didn’t have breakfast,
it was likely that you had some kind of a dairy.
- There are also lattes. - Cappuccino foam
leaves a distinctive trace behind.
Mr. Kim, please re-inspect
This is the first time we’ve been scared because of a pathogen.
How’s the patient?
I don’t think he can make it.
Ms. Park is late.
Did she call you, Mr. Kim?
No, except as she was leaving.
Ah, here she is.
I’m sorry I’m late.
Did the research department find anything?
We analyzed the DNA’s base sequence with the NGS,
but it’s neither a respiratory, encephalitis,
nor hemorrhagic virus.
I looked through the whole database,
but couldn’t find anything like it.
Here, it’s a recent image.
It looks like the moon.
It looks simple.
Yes it does. Did you check the swelling
and the infection route?
We don’t have enough data.
As of now, we’re testing people who came in physical contact with him.
Are there any similar cases for reference?
It doesn’t react to any diagnostic serum that we have.
Hello everyone.
Dr. Lee, you’re here.
Shall we?
Is this a new product?
The situation called for it.
Could it be Ebola?
The patient is a single 31-year-old male.
No significant medical history before this,
and no allergies, either.
From the scan, we can see lung hemorrhage,
fever, and these unusual red spots.
It’s feature is a ring-like hook.
And there are hemorrhages in the nose and mouth.
The muscular structure
around the legs has ulcers or has been deteriorated.
I think the immune system is perturbed.
The lung is hemorrhaging.
I heard he walked to the hospital just 24 hours ago.
What do you think?
What about you, Dr. Kwak?
I’m not sure. This is my first time as well.
Can we take everything to my research lab?
We can’t take anything outside, due to regulations.
So, instead, we provided a space for you at CDC Headquarters.
Let’s get started right away.
OK, Let’s check each other.
Even the smallest hole can cause a virus to take a life.
Check, and double check. Always take caution.
It might be uncomfortable since it’s your first time,
but never take off your helmet or gloves.
If there is ever exposure to a virus inside the lab,
do you know how to deal with that?
We lock down the place from the outside.
It’s not “Saving Private Ryan” here.
Going to war with viruses is madness.
When your colleague is contaminated,
you have to protect your own life.
Remember that.
Are you ready?
Yes.
Are you ready?
Yes.
Are you ready?
Number 1, food waste.
Number 2, ventilation duct.
Number 1, handkerchief.
Number 2, tissue.
Number 3, plastic waste.
Number 4, empty bottle.
I’m checking to see if there are any dangerous viral antigens that we already know of.
It’s like fingerprinting, right?
You’re checking for matching records.
Unfortunately, no match.
Number 5, beddings.
Here, this too.
The film that Mr. Kang found in the drawer was developed.
Where was this taken?
The wetlands. He went with a photography group 10 days ago.
Such a typical military policeman.
He finds every possible thing.
Ms. Lee, you joined us at the perfect time.
Until we find the source of infection, you’ll have insane night shifts.
Oh my goodness.
Mr. Kang was an MP?
Yes.
- But you... - I was hooked to CSI.
That’s why you didn’t go into public health.
I never dreamed of my job involving cleaning out the refrigerator.
People from CSI do that too, and other dirty work.
But they edit those parts, so they look better.
Gather around everyone.
- Do-gyeong. - Yes?
Please inspect the aquarium, its surroundings,
Dae-ik and Na-hyun will do blood tests of those who came in contact after the infection.
OK.
One more thing.
Contact the Photo Club
and find out what happened that day.
We’re including the wetlands in the first round of investigations.
- OK. - Are we going there?
Na-hyun!
Do-gyeong seems to have a keen interest in the wetlands.
Contact Dr. Lee’s lab and ask him to include us.
You asked Dr. Lee’s lab?
OK, let’s move quickly.
OK.
You never sent kimchi or anything else through the parcel service?
Family (Mother, Sister / Must be quarantined and tested)
Choi Jung-won (Janghang Wetland / Lee Hun-woo)
Aquarium (Colleagues / Must be quarantined and tested)
Contacted After Infection Son Medical - Dr. Son, 3 nurses 4 paramedics ER - 2 Residents, 3 Nurses
Notice of temporary closure We are closed due to internal affairs For questions, please call the number below Son Medical
You didn’t find any contamination in the food from the site?
No.
What about drinking water?
All clean.
What about the aquarium?
I looked at everything you told me, and detected nothing.
Even the blood tests were clean.
What about family members?
I was told that they haven't met for the past 3 months.
Were there any virus infections among
the people from the Photo Club?
All negative.
One transfer agent showed signs of infection
and fever, and increase in white blood cells,
so we’re observing him now.
If it’s a transfer agent, the case happened after the infection.
So that's not where it originated.
How and when did it start?
Who checked Mr. Choi Jung-won's medical records?
I did.
Except for his visit to Son Medical, there isn’t much.
He has a history of hepatic cirrhosis,
but he fully recovered from that.
Oh, that’s right. The people from the aquarium said that too.
They said he quit smoking and drinking after that.
Really? We found beer and vodka bottles in his apartment,
so I thought he liked to drink.
- Do-gyeong. - Yes, sir.
Can we take a look at the items we got from his apartment?
- Now? - Yes.
- Can I go? - Of course you can.
Next.
Can you zoom in on that so I can read the words?
Should I take it down?
Look for other receipts
to see if he got liquor at other times.
Receipts from the grocery?
Every single receipt there is.
- Dae-ik. - Yes, sir.
- Get me Mr. Choi's phone records. - OK.
Next.
Sir...
Please check his phone records from January 7th around 7 o’clock.
Did he get the liquor and the underwear on January 7th?
- Yup. Next. - So you must think there was a guest.
Once at 5 o’clock and then again at 7:30.
- Next. - They were both made from a payphone.
- Payphone? - Yes.
He didn't purchase any liquor
except on the 7th of January. Are we done?
Not yet.
Let’s look at other leads.
The evidence is definitely in there.
Alright.
“The evidence is definitely in there”.
That’s definitely Sherlock Holmes.
If everyone who came in direct contact is OK except for the paramedics,
then it means that it isn’t airborne.
There must be person who shared towels or toiletries,
or slept with him.
He didn’t have a girlfriend,
and hadn’t seen his family for over 3 months.
So, most likely, it was a friend.
It’s not likely that he slept over after he drank.
And January 7th was a Monday, so
he had to go to work in the morning...
Or it could be a friend without a place to stay.
Without a place to stay?
Could be a friend from overseas.
Or a friend who just got out of the military.
That’s all.
OK.
Nice job.
Is the only place that’s left the wetlands?
I don’t think that’s it either.
I checked, but
they said they didn’t find anything.
I thought that would be the most likely place.
That means there isn’t a source of infection.
It’s been over a 100 years since the spontaneous generation theory has been voided.
There’s no way it came out of nowhere.
The source is definitely there.
If the first round of epidemiological
investigations fails, that’s a national disaster.
Hello, this is Park Joo-hee.
What?
The mortality rate is 100%.
The paramedic just died.
The symptoms seem to be similar to those of Mr. Choi.
It’s only been a day since he started showing signs of fever.
Looks like we'll have to call an emergency meeting.
Hey, are you OK?
Do-gyeong.
Yes?
There has to be something missing.
Let’s go over this once again.
Next.
That’s it.
Wait, wait, wait.
Turn that trash bag upside down.
Shake it.
Check that.
I think I found it.
It’s a medicine packet.
This one is torn evenly,
and this one is torn only on the corners.
Does this prove the presence of another person?
People are consistent in their subconscious habits.
A person who tears off the corners will keep doing it.
Assuming that he took the medicine 3 times a day,
he must’ve stayed at least 2 days.
If there really were another person staying,
that person would be infected, too.
Would that person still be alive?
There were no reports, right?
That means the symptoms haven't appeared yet.
- The carrier? - The carrier?
That’s what a virus is, right?
It can acutely infect a person and affect the body.
Or it can be chronic and stay dormant, while still affecting the body.
If the person is still alive...
Then a time bomb ready to go off is walking around.
I think I’ve seen him...
Can you look it up on the records?
What was the name?
Choi Jung-won.
Oh, here it is.
What was the medicine?
Just a typical cold prescription.
I also gave him fever medication.
Did he happen to bring an acquaintance?
I can’t remember…
- This thing... - Let me get this down...
The hospital was Son Medical, right?
Yes.
Yeah, Dae-ik?
There are two records.
Two? There’s another one other than Son Medical?
Yes, Hanmaeum Orthopedics.
It’s located in Yongsan.
The infection on his left knee was bad.
The right knee was bad, too.
So he probably had some backache.
It’s not common that his cartilage was damaged that badly at his age.
So I asked him what happened, and he told me he was on a fishing ship.
With waves high, the boat shaking, and the deck often frozen,
working on that is no ordinary task.
And he did that for 2 years,
so that did a number on his knees.
Did he tell you anything else?
About what he caught and which ship he was on.
Um, he said Bering Sea or something like that.
I didn’t ask what he caught.
If you remember his appearance, please tell us.
He’s taller than 170 centimeters.
His face was very tan and just like a seaman,
his skin was rough.
His hair was short,
and he looked rather weak.
Was it this person?
That isn't him.
Who is he?
Mr. Choi Jung-won,
the man on that checkup record.
What? It wasn’t him, though.
It was a different person.
Thank you for your cooperation.
If he gave him his insurance card,
that means they were good friends.
If we talk to the people who knew Choi,
we may be able to find the fisherman.
He’s got short hair, is limping from the left leg, and in his late 20s.
This is Ki-young. I have a phone now. Call me.
Jung-won
Hello?
Did you call Mr. Choi on his phone?
Hello?
Hello? Are you there?
This is the Yongsan Police Station.
Mr. Choi is in the hospital right now.
May I ask how you know him?
Hello?
I'm just calling from the parcel service.
The customer's phone is turned off.
Choi Jung-won
Infection
Man in his 30s dies from mysterious disease
You’re the only unaffected one.
You’re the problem.
You’re the carrier.
Let’s die together.
You can’t go back alive.
Everyone’s going to die because of you.
If the friend is the carrier,
does he know that he’s carrying it?
If he knows and is avoiding us,
we need a new strategy, no?
I’m not sure yet,
but it is a possibility.
Possibility?
Yongsan Police Station sent this over.
It’s footage from Mr. Choi’s apartment.
The detective talked to him on the phone,
but thought something was odd.
He lied about his identity?
The police said they will check the phone records
and send us the results immediately.
If he infected Choi and is still out there,
that means there is an antibody to the virus in his body.
If only we can bring him here safely...
We must, no matter what.
I’ll bring the person who can
make the cure based on the antibody.
The infected person doesn’t show the symptoms,
but spreads the pathogen to others, leaving death in his wake.
She's called Typhoid Mary.
Where did she get her name?
In the early 20th century,
there was a lady chef named Mary Mallon in New York.
Her gallbladder was infected, so she was spreading it to others,
but she was the unaffected carrier.
People found out,
and she was put into quarantine.
But soon after, she promised she would quit cooking, and she was released.
She then changed her name and secretly started cooking again,
and, of course, started infecting others.
So she got placed into quarantine again.
It’s said that she spent the rest of her life behind bars.
From then on, people started
to call people who don’t have symptoms but infect others “Typhoid Mary”.
Typhoid Mary people believe they’re the victims
even though they’re considered attackers.
Think about it.
Even though they did nothing wrong,
they have to live isolated like criminals.
Wouldn’t that be infuriating?
So, most Typhoid Mary people eventually
lose their sense of guilt out of self-pity.
Well, coffee still tastes the same.
It seems like you haven’t changed, either.
By the way, why is your lab colder than outside?
Is the heater broken?
We turn it off in the afternoon.
We don’t want to deal with broken water pipes.
How thankful I am every time I see the faucet.
So much hard work is put into your papers.
Why don’t you show it to the public?
How many are there?
About eight...
I envy you.
Since I'm working in management,
research papers seem so impressive.
How is it going?
- The artificial antibody... - I almost got it figured out.
The simulation is almost done too.
I guess you will finish pretty soon.
Actually, there has been an infection.
I've never seen this kind of virus before.
I couldn’t figure it out after looking
hours and hours into the database.
It has a 100% mortality rate.
When can you join us?
What?
I’m supposed to finish the research at the Irvine research facility.
In the States?
When are you leaving?
The day after tomorrow.
The day after tomorrow?
What is all this?
It's information on fishing ships that came in from the Bering Sea.
It's a lot of work, but it won't be difficult.
It won't?
We just need to find the man who used Mr. Choi’s
health insurance card who’s in his late 20s,
with a bad left leg, and is about 170 cm in height.
We’re supposed to find one person
from all of these pictures?
We can’t even tell if a person is 20 or 40 from pictures.
That’s our only option right now.
If we eliminate foreigners and whatnot,
I don’t think it’s impossible.
Let’s take people over 35 years old out.
Then, we can just narrow down the remaining
candidates and just match the pictures.
How many fishing ships are there?
Eight of them.
How many people in total boarded the ships?
721 people.
And how many of those returned to harbor?
308 people.
413 people.
And if we take out foreigners and people over the age of 35?
Turns out to be 93.
From those people, let’s look for a picture of the man
that fits the orthopedist’s description.
Chang-shik!
Yes, doctor.
The pictures are blurry,
but you did examine him.
I looked over them three times,
but I don’t think it’s here.
I even had the nurses check them.
OK. Got it.
It isn't there?
- What happened? - Is the Bering Sea not it?
We can’t ignore that possibility,
but let’s look into it again,
assuming that Bering is the right place.
Dae-ik, can you check if there was any crewman who had to cancel their departure
because he was sick, or for any other reason?
OK.
Let’s raise the age bar to 40 from 35
and try again.
- Sir. - Yes?
- There’s one that sank. - A ship that sank?
The Moon Yang Ho, the ship that sank in front of Ulleung Island. Remember?
The Moon Yang Ho? Wasn’t that a massive disaster?
That cames from the Bering Sea?
Yes.
It left from Gamcheon Harbor, Busan.
It then went to the Northern Pacific to the Bering Sea, and did pollack fishing.
But it had an engine breakage, so on the 5th day returning home on December 19th,
it sank 50 kilometers south of Ulleung Island.
The distress signal was reported,
but radio was cut off immediately after the call,
and all of the 129 crewmen disappeared.
However, one crewman escaped on a life raft,
and was rescued.
- Na-hyun. - Yes?
Call the Maritime and Port Administration
and gather information on the survivor.
Yes, sir.
Are you sure there’s someone inside?
- You better not be breaking in. - Don’t you know me?
I spent the night here a few days ago.
Is there really someone inside?
You can hear the bell ring. Listen.
Oh yeah, I can hear it.
Yeah, so come on, open up.
If someone is dead inside, it’s all your fault.
It’s gonna be your fault.
What’s that smell?
Hi, this is the Seodaemoon Police Station.
Hello?
This is the police station. Please speak.
Um...
Yes, speak please.
Yes, thank you.
Uh Ki-young, age 26.
The address is Asan.
The address in Seoul isn’t here.
We just need to check if this is the same guy that showed up at Mr. Choi’s apartment.
It’s the same guy.
Here’s a copy of his file from the cell phone company.
Hold on. Sir.
Yes?
I think it's another infected person.
Another?
There’s an infected body,
but the cops collected it without knowing.
He said it himself that he was infected?
He seems to know about the first infected person.
I’ll take it.
This is Kang Ju-hun of epidemiology.
Hello?
Am I infected?
If you tell us your location,
we’ll help you get the necessary tests.
How?
We’ll have a first-round examination at the site,
and then we’ll take you to a hospital
where you’ll go through a second-round
of testing, and you’ll know for sure.
What happens if I’m infected?
Can I ask if you have a fever,
or have red blemishes all over your body?
No, I don’t.
You had nothing for the past 10 days?
How many people are infected?
Please call the Seodaemoon Police Station
Wait, what did you say?
The number of infected people.
I can’t say that over the phone.
If you tell us your name and location,
we'll give you that information.
Hello? Hello?
What is your current location?
Hello?
This bastard is a Typhoid Mary.
He knows he’s the source.
Son of a bitch!
I didn’t do anything, but people are dying because of me. Does that make sense?
The virus could’ve spread throughout the ship.
I wanted to spread it. I couldn’t control it with rationality.
If I go, I’ll be subject to experiments.
I don’t want to live like that.
I’m leaving.
It might not have been my fault, but we could’ve saved the boy.
This can be a plague worse beyond our imagination.
As soon as a person is infected...
No!
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