Don't you dare run your mouth if you don't know anything.
I'm talking because I know.
I made the right decision.
Everyone else was too afraid to even try.
All of my efforts almost went down the drain because of their fear.
Wasn't it your greed that washed away all the conscientious efforts
made by your mentor and friends?
They were completely wrong and cowardly.
They never deserved this to begin with.
I see.
They were wrong, cowardly, and unqualified.
That's why you hated them so much.
Don't talk to me like that.
So, I guess that's why you decided to take all the credit for it.
I told you not to talk to me like that!
Is that why you killed them? Both of my parents!
Yes, I killed them!
I was the one who gave the order to kill them. It was my doing!
I gave them chances,
but your parents threw them all away.
Do you think that means
they had to die?
Definitely.
They ignored their duty to save the world
because of their so-called values.
Save the world?
By killing people?
You call that saving the world?
Human beings with shallow morals like you
end up benefiting the most
from that which they oppose.
Your beliefs are nothing more than a pretense.
How could you?
I'm the son of your friends you killed.
How could you say that to me?
Don't expect me
to feel any remorse or guilt.
I did the right thing for everyone.
I'll never regret it!
And know this.
The reason I didn't tell you about your parents
wasn't because I was ashamed.
It was because I felt sorry for you.
If you hadn't known the truth,
you would have been happier.
In a sense,
I gave you a chance.
Fine.
Kill me if you want.
Kill me if you think this will end it all.
You're right.
This isn't the end.
I'll destroy
the one thing you value
more than your life.
I'll destroy
everything you gave your entire life to.
If that's the case,
you'll have to put a lot on the line too.
That's not a problem.
What about Dr. Jung Han-su?
Did you kill him too?
Dr. Jung gave up his chance
before your parents did.
DR. PARK JI-SANG
Yes, I killed them!
I ordered to kill them!
Hey.
Hey!
Look at all that blood.
Did you get into a fight?
Just go.
Hey, are you high or something?
I told him to wait here. Where on earth is he?
Please, just go.
No.
I need to beat you up a little so I can sleep tonight.
I'm saying this for your own good.
Just go on your way.
-Why, this punk. -Dr. Park!
Dr. Park, calm down.
We're the ones who need to calm down. He was the one who messed with us first.
I'm sorry.
He's very drunk right now.
Step back.
Please, just calm down!
Move! Stop being so annoying.
-Let me apologize for him. -I don't need your apology!
Dr. Park.
What?
Will you hit me first?
Go ahead. Hit me.
I'm sorry.
I was drunk and made a mistake.
I'm sorry.
Are you scared? Do you think a sorry would do?
He apologized. Isn't that enough?
Sorry.
You jerk. Get over here!
-Let go. -Let's go. Forget it.
You called me out, remember? What's wrong?
You did well.
Thank you for holding back.
You hurt your neck and it healed?
Did you have to kill Kim Byeong-su?
It's the rule.
Our identity must be kept a secret.
It was your mistake.
A foolish mistake.
I've always thought
that you're very weak and have no manners.
Why did Director Lee take you under his wing?
I may have no manners, but you have no soul.
You enjoy hurting the patients.
And now, you've killed...
You don't know who I am.
No.
It's best that you don't.
This is the last time
I'll be nice to you because you're Director Lee's favorite.
What will you do now?
You've declared war.
We need to stop them from administering the drug in Ward 21A.
But the problem is not the drug they're planning to administer,
but what's already been administered.
That's right.
That's enough to cause a huge problem.
We need to stop them from administering the drug.
-We need to get the patients out-- -No.
Keeping them isolated would be the safest.
If something happens after they spread out,
it will be impossible to get it under control.
No wonder they created a ward that they could shut down.
We have to hope nothing happens.
Shouldn't you
tell Dr. Jung the truth now?
That's right.
What?
I dropped my phone earlier.
I assume you're not here to say hi.
It's about Manager Joo In-ho.
-Killing Kim Byeong-su was too-- -It was the right decision.
Don't bring that up again.
As you are aware,
ever since I became infected,
I haven't been able to taste wine.
Instead, for the past 40 years,
I've had to try to recall the faint memory of its taste when I drink it.
But now...
I think I should stop drinking it.
I don't want my memories from back then
to control me anymore.
But you can't control your memories.
I can.
As long as I don't feel the need for it.
Memories...
will be our Achilles heel one day.
From now on.
we must only look forward and march on.
We must eliminate anything that gets in our way.
I've always been
preparing myself,
but actually hearing it...
Why did you leave Director Lee alone then?
Because...
I didn't think killing him
would solve anything.
I also thought
that I would really turn into a monster if I did.
I was afraid I would change my mind.
I was afraid I would go back to him
and do something I would regret.
That's why I asked you
to come get me.
You did the right thing.
That was a wise decision.
I had a similar experience when I was young.
That time,
I really felt like a monster.
Back then,
if you had been there,
I probably wouldn't have done something so foolish.
Thanks for listening to me.
Strangely,
I tend to listen to you.
Why?
Other than my mom,
you are the first person
to move my heart.
Today, you were more human
than anyone else.
You were a super cool human.
Can I talk about myself too?
You know,
after my mom and dad passed away,
I was too scared to lean on anyone
in case that person
would suddenly disappear.
But
that scary feeling
has recently come back because of you.
But I like it.
I like that fear.
Go ahead.
I need to stop by somewhere.
Okay then.
But why do you look like you haven't slept at all?
I slept well.
See you later.
I haven't seen you here in a while.
Does the vice director know too?
Is that what you ask first?
Yes.
She found out before I did.
Why did you hide it?
There are things you can't tell even your family.
You didn't keep it from me
because you were afraid I would worry.
What?
You don't want to show any weakness
either to your enemies or your friends.
You don't listen to people who really care
and only trust the director.
To you, the director's fancy words matter more
than your family's warm words.
-Rita-- -You need to change.
The director is...
He's making a drug using a dangerous virus.
You can't take it.
It's my last hope.
Why can't you understand how I feel?
Because it will give you despair, not hope.
Do you wish that something bad would happen to me?
That way, you can take over this hospital sooner?
Uncle.
What do you think
is more important to me than you?
Money? This hospital?
Then, what is the most important to you?
I guess it isn't me.
-Rita, why do you-- -I heard your illness is hereditary.
That means I can get it too,
but you didn't say a word to me.
You were too busy hiding your weakness.
I was going to tell you
when the time was right.
You've already missed your timing.
It will be difficult to turn back time.
CHAIRMAN'S OFFICE
She was reported missing?
The police came by
and asked about Ms. Seo's whereabouts.
Of course, we said we knew nothing.
Who...
The police said the report had been made in the name of New Drug Development Team.
I don't know who did this, but let's just wait.
Let's see how far they go.
And another thing.
Park Ji-sang and his team will pressure us now.
Stop administering the drug for now.
Pardon?
"Stop administering the drug"?
I have something in mind.
I don't know what that is,
but shouldn't we continue with our plan regardless of Park Ji-sang?
We've strayed too many times from our plan.
-We shouldn't-- -We shouldn't what?
We shouldn't break the protocol anymore.
Have I broken the protocol so many times?
-Is that right? -Yes.
The security camera caught her rushing out.
And then?
She got in the car and left.
The car returned after three hours,
but some man was driving it.
Who?
He was wearing a hood, so we couldn't see his face.
Did Seo Hye-ri's car have a black box?
Yes.
I took out the memory card before reporting her missing.
Find out where she went.
Okay, ma'am.
Come in.
Did you sleep well?
Of course.
I'm glad to hear that.
I hope you weren't so upset last night that you forgot everything I said to you,
were you?
Of course not.
I remember every single word.
That's great.
That way, you can write your apology letter in detail.
Show me something, anything.
Let me enjoy it first.
I'm sorry, miss.
-I thought you would... -Be worried?
That's what I thought at first too.
But I just don't get it.
You should have forced my uncle to get a follow-up
or should have taken some other measures.
He's in more pain every day.
I was going to. I was waiting for the right time.
And another thing.
You knew he was being manipulated by the director
because of his illness, didn't you?
Then you should have stopped him or at least told me.
Rita.
This isn't as simple as you think.
And finally,
what about me?
I heard the illness is hereditary.
That means I can get it too.
If you were genuinely worried about me, you would have told me.
Rita, I--
You claim it was for me, but nothing you did was really for me.
You admit that, don't you?
That's a misunderstanding.
Why would I--
To be honest, I can't understand you or Uncle lately.
I have no idea what you're thinking.
Oh, my.
You can walk again now?
It's thanks to all of you.
You'll be exhausted if you walk too much.
Just take a ten minutes' walk.
Okay.
Hey.
You should apologize when you bump into someone.
Honey.
It was barely a tap.
Stop New Drug Development Team from giving any more shots.
Unless it's been approved officially, we have no grounds to stop them.
Grounds?
I'll get you the grounds by today, so please do as I ask.
What if they do it forcibly?
Then call me, Dr. Yu, or Dr. Jung.
Please call any of us.
Nurse Lee!
Come, quickly! Hurry!
Dad!
Honey!
What's going on here?
You.
I will kill you very soon.
-Sure, kill me. Go ahead and try. -Honey.
Kill me!
You're scaring me! Please stop!
Why are they fighting?
It was nothing.
That man bumped into him slightly while he was walking by.
You should have stopped them from fighting.
I won't grab that today, so don't worry.
Stop administering the drug in Ward 21A.
I don't think that's your call to make.
It's not a call.
It's an order.
I only follow the director's orders.
Then go right ahead.
Don't blame me for what happens.
Is this kind of coercion and self-righteousness
allowed at Taemin Cancer Center?
"Coercion and self-righteousness"?
You guys displayed that first.
Dr. Park.
As you ordered,
we will stop administering the drug.
The director already gave the order this morning.
Don't give the drug to the chairman.
Of course, I won't.
It's too soon to give it to the chairman.
That's not what I meant.
Never give it to him.
That is none of your concern.
I'm the chairman's niece.
I believe I have a right.
Wouldn't it be great if a family's love could cure diseases?
But what love can do at best
is produce some endorphins.
And what the drug can do is
infect people, right?
You've come to know a lot.
Did you tell the chairman too?
Stop the research and the administration of the drug,
and I'll keep my mouth shut.
That's a promise.
I've always thought
that you were becoming too much like Dr. Park.
This is a warning and a request.
Please...
don't give me attitude like this again.
The reason why you've been safe all this time
is because of my respect and consideration for the chairman.
Is that so?
If I'm not safe, Dr. Park may set off another bomb.
Didn't you get a bomb from him?
Shouldn't you
tell Dr. Jung the truth now?
Is something wrong?
Dr. Jung.
I think
it's time I tell you.
What is it?
I thought it was a real bomb.
Wow, you're coming out strong.
It's a scary antibody that eats anything it touches.
Does it have a name?
What are you thinking?
Hey.
Answer me when I'm talking to you.
I told you not to speak rudely to me.
I told you, I'll do what I want.
You're looking down on me because I'm stupid, right?
That's it, right?
You look down on me because I'm stupid.
No, I was just...
You do!
You look down on me because I'm stupid?
-It hurts. -Isn't that it?
Yu-jin!
What's wrong with you?
Are you okay?
Oh, my.
I'm sorry, Na-jeong.
I'm sorry.
I'm so sorry.
What about Dr. Jung Han-su? Did you kill him too?
Dr. Jung gave up his chance
before your parents did.
You were pretty much sure that he did it.
Why didn't you tell me?
Rather than going with my gut feeling,
I wanted to hear him admit it.
Where are you going?
He killed my father.
I can't leave him alone.
Dr. Jung!
Move.
Please calm down!
We can't go after him like this.
Why can't we?
He must pay for what he did.
Dr. Jung!
He has no intention of paying for it.
-We have no proof as well. -We have the recording.
If we bring this to the police,
do you think he'll pay for his sins?
If he won't,
I'll kill him myself.
Dr. Jung!
Please don't do this.
You might end up dead first.
I am trying to stay calm too.
Please.
Let's be more rational.
Please?
Dr. Jung!
Please leave us alone.
Come in.
What's wrong?
Dr. Jung is in a rage.
Whatever it is, he made a mess of the lab.
I see.
Do you know what's going on?
No, not really.
You're all acting strange lately.
Why are you all keeping it from me?
What are you talking about?
Look at what's going on.
How can I not think that?
At least I found out one thing.
The people I trust the most
don't trust me.
That's not it.
I'm not sure.
Everyone has been acting strange since the virus issue came up.
I feel like I don't know any of you anymore.
Why does this make people distance each other?
It must really be a virus.
A virus that makes people distance each other.
I'm leaving.
Hey, Su-eun.
Su-eun.
Director Lee.
What brings you here?
From your expression,
I can tell you've heard the news from Dr. Park Ji-sang.
Did you come to tell me that you'll get revenge?
Revenge?
I can't bite a dog
just because it bit me first.
Whether or not you're infected,
you and I are both doctors.
We should fight like ones.
I will neutralize VBT-01
no matter what it takes.
And if possible,
I will get everything back to the way it used to be.
I feel like Dr. Jung Han-su has returned.
Don't ever say my father's name.
I'm sure my father
never thought of you as his student.
I hope
you won't end up like your father.
Even if I die,
I won't go alone.
Don't worry.
Her last destination was the Atlan Tower Ville parking lot.
"Atlan Tower Ville"?
It's where Director Lee lives.
Yes, Mr. Chairman.
What are you thinking?
You knew, but you kept it a secret?
That wasn't it.
There was nothing I could do anyway,
so I didn't say anything out of consideration.
"Consideration"?
Why?
Were you going to take me down by exposing me
during the shareholders' meeting?
If that was my goal, I would have done it already.
Then...
did you want to use it against me personally?
Like with the recording?
I'm sorry if that's what it looks like to you.
Sorry my...
Are you okay?
I should have suspected you
when you followed my order so obediently.
Even if you were ordered to do it,
a normal person couldn't plan to kill someone
just to advance their career.
That's the kind of person you are.
Mr. Chairman.
-I did everything for your-- -Get out. Now!
Something is fishy.
They wouldn't give up administering the drug so easily.
Stage three may have been the final stage.
Even if it were a normal drug testing, they wouldn't stop here.
They'd need as much data as possible.
Then why...
I'm sure
they're not just being nice.
We need to figure out what their true motives are.
We have no choice but to continue to isolate the patients.
You're right.
We must prepare for the worst.
What is it?
Please move Na-jeong to a regular ward.
You stopped administering the drug, and she hasn't received any anyway.
I think it will be okay to move her out.
I'll think about it.
Please, Director Lee.
I'll let you know tomorrow.
Thank you.
Manager Joo.
Wait.
We were told not to let you administer anything or take blood samples.
Look the other way this one time.
But still...
If you say you saw me,
you'll regret it.
A lot.
I'm going to go back home now.
It's still dangerous.
It's okay.
I've already warned the director.
What?
I said if he touches me, you won't leave him alone.
That you may drop a bomb.
Why did you do that?
You let him know that you know everything.
It's fine. I'm tough.
You know that.
He can't do much to me right now.
And even if I go home, you'll come by every day.
Take some gear with you just in case.
I'll let Hyeon-u know.
Okay.
And here.
You lost your phone because of me.
I could have just bought one.
I bought it first,
so just use it.
It took me ten whole minutes to choose this.
Just ten?
No, it took me 20 minutes.
An hour.
Your taste has improved.
It's pretty. It looks like a jewel.
That's why I chose it.
Thank you.
We've strayed too many times from our plan.
-We shouldn't-- -We shouldn't what?
We shouldn't break the protocol anymore.
Have I broken the protocol so many times?
Yes.
I can't understand why you introduced the stage three vaccine so early
or why you excluded Lee Na-jeong from testing.
All test subjects must be tested in the same manner.
I assume you excluded Lee Na-jeong according to Min Ga-yeon's request,
which I find unreasonable.
That's enough.
I think sticking to the protocol
would be in your best interest.
No.
What's best for me is you doing what I say.
And from now on,
don't express your personal opinion about the test.
Come in.
Yes, this is good.
This is it.
Really?
Yes.
The serum contains
a suppressant on top of the viruses.
It's called hasopatoxin.
It's found in a poisonous plant from South America.
How can it be used?
Hasopatoxin has a very unique molecular structure,
so it reacts to strange compounds.
It reacts to the chemical sonein.
-Sonein? -Yes.
It refers to a carbon-9 methane hydrocarbon--
Explain it in a way I can understand.
Anyway,
it's a clear liquid with a sweet scent.
It spreads very rapidly.
But do you know how an infected person with hasopatoxin in his body
reacts to it?
If he smells it,
a chemical reaction occurs in the mucous membrane in the pharynx,
which causes him to cough.
Regular humans won't react.
They will just get sleepy.
So, if we use this as an air freshener or perfume...
Bingo.
The infected who are pretending to be human
will be found right away.
When can we get it and use it?
Well...
just give me
five days.
No, I'll give you two.
Come on.
Yes, Mr. Chairman.
There was a slight change in New Drug Development Team's policy.
I will explain it in detail personally
and tell you the plans that we have.
Oh, no. I'm afraid I'm not available now.
I'm on my way to Busan because of an urgent matter.
I'll be back in Seoul in a few days.
We can discuss it over the phone if it's urgent.
That won't be necessary. We can talk when you return.
Okay.
Okay. Have a safe trip.
-Yes? -I have something urgent to report.
What happened to your arm?
It's nothing.
I must have slept in a wrong position.
Were you okay alone?
I slept well.
I'll see you later.
Wait a second.
What is it?
What? Let go of me.
Why did you do a blood test?
It's just for a check-up.
Let's talk.
Stop overreacting.
Do you know what we have in common?
We're both horrible liars.
So spill it out.
Are you sick? What is it?
We promised we would not keep secrets from each other.
We never did that.
Well,
we just didn't say it.
But it's the same thing.
I didn't have my blood tested because I was sick.
Then why?
I looked over the VBT-16 documents you gave me,
and it is much more powerful than I expected.
I could tell that from what I saw.
It doesn't just neutralize VBT-01,
but also neutralizes every vaccine and serum.
I'm sure it does.
It destroys every living cell.
But there is a bigger problem.
What is it?
This wasn't created just to destroy the virus.
Then?
It's the source of a vaccine and serum
that can turn the infected back to normal.
I'll neutralize VBT-01
no matter what it takes.
And if possible,
I will get everything back to the way it used to be.
It may also hold the key
to eliminating the existing adverse effects.
We need all the material on this source.
This isn't a bomb.
It may be the solution.
This is why I told you not to ask.
You should have told me.
You can't stand it when others keep things from you,
so why were you keeping this to yourself?
You already had a lot on your mind.
I didn't want to burden you.
How could you...
If you think about it,
it's just a possibility.
I might never get sick.
So...
I'll just try to stay positive
and live my life.
But...
now I'm confused.
I feel like the people I trust the most
are hiding something from me.
Not for my sake,
but for some ulterior motive.
I feel so empty now.
Everything feels empty.
My heart
feels like a big
empty room.
A room without a window.
I'll be okay, right?
I don't mind getting sick,
but I don't want to burden others.
I'm done talking now. Is that enough?
I'll get going now.
That's how you felt,
yet you were comforting me?
Your heart feels like a big
empty room without a window.
You're terrified of getting sick,
but you still came to stop me.
You still sat by
my cold bed.
That's different.
You said my reason
for wanting to become a human
was too vague.
You're right.
It was.
But now,
I think I found a real reason.
I want
to love a person
like how a human would.
With a human's warmth.
I want to go through the years
with the person I love
and finally
close my eyes peacefully.
That is now my reason
for wanting
to become a human.
Dr. Park.
I may not be able
to fill your empty room.
But...
I can be a small window
so the room won't be dark.
I have something to say too.
Even if you
don't become a human,
it's okay.
Your body temperature
was never important to me anyway.
Dr. Choi.
Come here for a second.
Okay.
What does this look like?
Well...
it looks like an extreme case
of cell-mediated immune reaction.
Is that what you think?
To me,
it looks like when you're on the wrong bus.
The wrong bus?
Then, shouldn't you get off and transfer?
When Archimedes saw the water overflow from his tub,
is this how he felt?
Eureka?
Dr. Min.
Yes?
-Do you feel okay? -Pardon?
I thought you would be upset about what happened to Byeong-su.
Right.
I'm not okay, but I'm trying to be.
That's right.
You need to be strong.
I trust that you will be.
Let me know if you want to get porridge again.
I'll even eat animals with more than four legs for you.
Thank you.
Dr. Park.
Thank you for always being warm to me.
It's because you've never made me regret my decision to hire you.
Pardon?
You still look like you don't sleep much.
Na-jeong.
Do you feel sick? Na...
I didn't do it on my own. Director Lee ordered it.
We brought her in as a test subject,
so naturally she should be given the drug.
But you promised
that you wouldn't give her the drug.
Remember what the promise was.
It was just for the time being.
That's what you said,
but I thought you would leave her alone anyway.
Why?
Why should I do that?
Because you saved me.
So, I thought you would do the same for Na-jeong.
Saving you was more than enough!
Didn't I make it clear?
You must erase all of your memories!
They will become your weakness!
Don't you dare pretend
to have a weak human heart like Park Ji-sang in front of me!
Just remember how you felt
when you stood on that ledge.
Yes. Are you ready?
You have to get it.
Park Ji-sang is in Dr. Yu's place.
Joo Hyeon-u?
Take care of him.
Tell me the truth.
When did you last clean the floor?
I don't know.
Maybe in January?
Or last Christmas?
You've got to be kidding me.
No matter how much I clean it, it's still dirty.
This isn't a floor.
It's shoe polish.
The more I rub it, the darker it gets.
Then you'll feel very proud when it turns white.
Keep scrubbing, okay?
Gosh.
What's wrong?
PARK JI-SANG
Hey, Luuvy.
Should I put an egg into the ramen or not?
No?
Okay then.
Ramen sure tastes best in a clean broth.
Your call is being forwarded to voicemail.
This looks good.
Emergency.
Possible infected men are attempting to break in.
Emergency.
You sneaky punks.
Even if you take the physical condition transforming substances,
I can still detect you.
The second-floor lock has been disabled.
All right. Do you really want to do this?
What is it?
JOO HYEON-U IS IN DANGER
Hyeon-u!
Ji-sang.