(Undercover High School)
(A Good Friend to Meet)
(All places, organizations, characters,)
(incidents, and backstories in this drama are fictitious.)
Wait. Come on.
Who was it? Tell me.
Why do you even want to know?
Don't be like that and tell me.
I can't sleep with this hanging over my head.
Wait, it's raining.
What...
Oh Bong Ja, take this umbrella.
I told you not to call me by that name!
Just a second.
Mom, I don't go by Oh Bong Ja anymore.
Why is there only one umbrella?
That's me being smart.
- Don't leave him hanging and go! - What?
All right, fine.
What were you going on about?
(Have a Drink With Su A)
Sorry about that. We only had one umbrella.
Shall we? Where do you live?
Have you lost it?
Is Bong Ja your name?
Oh Bong Ja?
Yes, that's what I went by.
Who are you to smirk at someone else's name?
It's not that. You're totally mistaken.
I know the name is old-fashioned,
but it's rude to laugh in front of me.
So much for walking you home.
- Get home yourself. - But...
How annoying.
Why are you already back?
Why didn't you go with that handsome young man?
What is it? What's wrong?
(Episode 7)
Let's get married.
You like me,
and I like you too, so let's get married.
You kind of look like him.
Who?
Just someone. Someone who's like my sworn enemy.
Was she talking about me?
Really?
This is the list of guests attending the Night for Byeongmunites.
We have confirmation that everyone will be present.
Meanwhile, those are the parents in the academic management program.
(Academic Management Program)
(Child attending Byeongmun High)
(Child attending Byeongmun High: Han Seung Jae, Grade 11, Class 2)
Mom.
Hey, you're here.
Let them know we'll gather separately for tea...
during the event.
Yes, ma'am. I'll relay the message.
Have a good evening.
I heard something happened earlier at school today.
When were you going to tell me?
My Ye Na,
you are to be the face of the school.
But someone like that...
is cutting herself?
If word gets out,
I'll...
I'll be mortified.
I'm sorry, Mom.
I want my Ye Na...
to be strong.
Mom. Gosh, Mom...
Strong enough to know...
Mom...
that even cutting yourself won't change anything.
An important event awaits us.
Let's both cut ourselves all we want...
and shed all our tears.
Now that we're done,
we'll smile.
Whose daughter are you?
Yours, Mom.
Now, eat.
I didn't mean what I said
I was worried
You might see how I felt about you
That's all
My darling
I only have eyes for you
Please just focus on me, babe
Pretend you didn't
And I'll fake it too
Yes!
What were you doing?
When did you get here?
A second ago.
You could've announced yourself.
Do you normally come to school this early?
I couldn't sleep properly last night.
Since I was up, I figured...
Has the mission been compromised?
Of course not.
Anyway,
it's about that sworn enemy you once mentioned.
What about him?
Well...
It's nothing.
Why are you cleaning first thing in the morning?
Don't they have cleaning ladies?
Well,
this is me investing in myself.
You never know.
Someone might post a photo of my love of the school...
on the school bulletin board.
That will give me additional points...
when I'm being evaluated to become a full-time teacher.
I see you work hard.
Right? I work extremely hard.
It's admirable.
You'll get the job for sure.
I'll be rooting for you.
That was unexpected.
Is something up at home?
What is wrong with you?
(Byeongmun High School)
Ms. Kim.
This happened to a friend.
On a rainy day,
some guy pulled her toward him right in his arms...
to save her from being hit by a motorcycle.
Is her name Oh Su A by any chance?
Gosh, no. Keep listening.
And then, he went on to shower her...
with words of encouragement.
"You work hard."
"It's admirable." Like that.
What do you think? Didn't he give her the green light?
What's the relationship between this friend...
and the guy?
They're acquaintances...
with an eventful history.
They're just acquaintances and not in a fling?
It's nothing.
Ms. Oh, here goes.
There's something...
that must be kept in mind by those like your friend...
who have never had a boyfriend before.
Don't mistake friendliness for romantic gestures.
I've seen many people be humiliated...
because they forgot that cardinal rule.
Tell your friend...
to be careful.
Teachers, gather around.
Over here.
We now have to decide on the face of Byeongmun High.
Look at the photos and openly voice...
- your personal opinions. - Sure.
I think Ye Na will represent the school quite nicely.
What do you think?
I like Ye Na for this too.
- Of course, it should be Ye Na. - Absolutely.
Good. Then that's it for the female student.
Let's move on to the male student.
Goodness. Look how handsome he is.
- He is a handsome one. - Right?
His parents must be proud because he is one handsome young man.
What do you think?
If no one objects,
Hyeon Joon will be chosen as...
A vote!
Let's put it to a vote.
Would that be necessary?
They say that voting is the key element of democracy.
And honouring that...
is how we show respect to the fighters of democracy.
It is also our duty as their decedents.
Why does choosing a model have to be a grand process?
Being sloppy for even a second...
could cause us to fall right back into a dictatorship.
As a teacher of Korean history...
who preaches about learning from the past,
I am deeply worried...
about this process.
Fine. We'll vote.
Put it to a vote.
Thank you.
Hurry up, will you? What's taking you so long?
I'm done, sir.
(The Male Face of Byeongmun: Ji Hyeon Joon, Grade 11, Class 2)
Oh, no.
Darn it.
Let's count the votes.
Ji Hyeon Joon.
Jeong Hae Seong.
(Jeong Hae Seong: 4, Ji Hyeon Joon: 4)
- Ji Hyeon Joon. - That's it.
Jeong Hae Seong.
(Jeong Hae Seong: 5, Ji Hyeon Joon: 5)
This is the last vote.
(Votes, Male Face of Byeongmun)
Please...
The results must be out by now.
I'm even more nervous now...
than I was before I took that beating from you.
Hae Seong will win, right?
I had a lucky dream last night.
Hae Seong will win for sure.
Guys, the faces of Byeongmun have been posted!
Hey!
Shoot.
Did you hear...
- about the face of Byeongmun? - Who won?
Jeong Hae Seong!
(The Faces of Byeongmun: Lee Ye Na, Jeong Hae Seong)
What a relief.
Thank you, Dad!
Hyeon Joon's Mom, of course.
I'm truly sorry about this.
I tried my best but...
That's it!
- Snacks are on me. - Snacks!
- Let's go. - Come on.
- Let's go! - This way!
It's his treat!
Nice!
Let's take a rain check on the snacks.
What? But you said you'd treat us.
I'm really sorry about this.
Hey!
Where are you headed?
- The library. - The library. Sure.
You read a lot of fancy books.
No wonder you have the highest grades.
All high school students are required to read these.
Try reading sometime.
Oh, this one.
Goodness.
Why are you following me?
I wasn't following you.
I was going my way.
Even a kid wouldn't be this childish.
Five minutes.
I have to get to class, so no more.
First of all,
I'll start with an apology.
I meddled in your life...
when I didn't know anything about it.
Sorry.
Were you tutored by someone?
What's gotten into you?
That's just how I feel.
I...
don't want to see you hurting.
Ye Na...
isn't the mean girl you peg her to be.
She has it rough, that's all.
Her life is tough,
and I'm the only one who can take her crap.
She's only venting, so don't hate her too much.
Got it.
Your five minutes is up, so I'm off.
- Hey. - We're done...
looking into the detective on Kim Hyeon Ho's case,
but you need to hear this in person.
That's the bell, guys. Get to class!
- Yes, ma'am. - Yes, ma'am.
Leaving school early. Cooperation requested.
What the...
How old is this jerk?
(Leaving school early, Cooperation requested)
Cooperation, my foot.
The detective on Kim Hyeon Ho's case...
We looked into everything from his accounts to his assets,
but nothing was out of the ordinary.
Then what was flagged?
The detective has a daughter.
She's been hospitalized for chronic kidney disease,
but she was recently moved to a hospital owned...
by the Byeongmun Foundation.
The foundation is footing her medical bill.
"Recommendations made by Park Jae Mun,"
"Principal of Byeongmun High School."
The question is this.
Why did the principal have her admitted...
when he doesn't know the detective?
To hide the fact that he's the culprit.
By wrapping up the case as a suicide.
The archives in the basement of the old building...
were put up by my dad and not the chairwoman.
At first, I wondered if the chairwoman...
was also looking for the gold bars...
and thought that they could already be in her possession.
If Park Jae Mun was the one after the notebook,
it'd be safe to assume that the chairwoman...
hasn't found them yet.
If, and this is a big if.
Could Seo Myeong Ju have anything to do...
with your father's disappearance?
We'll soon find out.
(Chairwoman Seo Myeong Ju)
For now, let's focus on the third ghost story.
- Mi Jeong. - Yes, sir.
I compared Byeongmun High's school song...
to the song Hae Seong recorded.
As you can see,
it's the same song but with different waveforms.
Judging by the spread of the notes and the number of them,
the school song you recorded...
has to be a piano four hands.
A piano four hands.
Two people must play the school song together.
Once you play the piece,
we'll get a clue about the last ghost story.
Who here can play the piano?
So much for things going smoothly.
Getting into the chairwoman's office wasn't our only obstacle.
Come on, you brats. What are you going to do about this?
I'll do it.
Ms. Oh?
Why do you keep entering while making a declaration?
Because it's cool.
Outside, I heard everything you said.
(Master Czerny)
Czerny that comes after Beyer?
The school song isn't that difficult to play.
Even with all thumbs, anyone will be able to play it...
after a few hours of practice.
Hold on.
This isn't a game.
If you get caught in the chairwoman's office,
you could get fired.
Really?
- Then I won't do it. - What?
That was unexpected.
Good thinking.
- Let's continue... - Wait.
- Ms. Oh will do it. - What?
A twist upon a twist.
We can't officially ask for assistance...
with this being a secret mission.
As of now, Ms. Oh is our best bet.
I'm sorry, but I don't want to.
No.
You can do this.
Because you are the one and only partner...
of NIS' finest agent Jeong Hae Seong...
and the honorary field agent...
of Domestic Team Four.
An honorary field...
agent?
What are you two doing?
What are you saying?
I'll do it.
I'm an honorary field agent, after all.
That's Ms. Oh for you.
She's our team's wild card.
Have you lost it?
I need you to promise me something in return.
(I, Senior Agent An Seok Ho of the NIS, will provide...)
(state-level support for Oh Su A's full-time teaching position...)
(November 10, 2025, An Seok Ho)
Nice.
Just a second.
- Come with me. - What?
I won't say this twice. Don't do it.
- Why not? - Because it's dangerous.
As if you need to ask.
Either way, you can't do this.
All faculty members of Byeongmun High...
are expected to be at the event anyway.
Anyway, it's already been decided,
so let's just focus on the mission at hand.
This.
Why are you hell bent on becoming a full-time teacher?
As if I need a reason.
No one wants to stay a temp.
But not everyone...
willingly puts themselves in danger to achieve it.
So be honest with me.
I have to do it for someone.
This is what I like.
She was one of my first students,
and I made her a promise.
That I'd become a full-time teacher.
Darn.
That made things weird and killed the vibe.
Anyway, I have to become a full-time teacher...
and am ready to risk everything for it.
So please don't stop me.
What's life without a little risk?
Stay right beside me.
- Unbelievable. - Thanks.
This is wrong in every way.
You really are clueless.
Are you knowingly turning a blind eye...
or are you just dense?
Ms. Oh,
do you even care about your students?
Why was I so blunt with her that day?
Hold on.
Don't worry about it.
It can happen.
Why would you even care?
(Ms. Oh Su A)
This is Jeong Hae Seong.
Why are you speaking in a deeper voice?
What's up?
Principal Park showed up at the library!
Only two people can deactivate the security system.
Chairwoman Seo Myeong Ju and Principal Park Jae Mun.
The door can only be unlocked with their fingerprints.
Principal Park, hello.
Right. Hello, there.
("Love Everything")
Is that the book you're checking out?
That's actually what I came here to borrow.
Oh, dear. What do I do?
I really wanted to read that book today.
Take it first, then.
Really? Thank you.
(Byeongmun High School)
Thank you.
("Love Everything")
What's wrong?
It's nothing.
Are you stupid?
Do, sol.
Do, sol. That's it.
You can't even memorize that?
Sorry.
(Meditation)
("I Don't Understand My Own Mind," "Why Do I Feel This Way?")
Hello, this is about a friend of mine.
He's been acting weird. What is wrong with him?
(Question)
We will be prepared,
but we have no idea what could happen inside.
You need to be able to protect yourself...
in case I can't help you.
I can do the shoulder throw,
and I have a gas gun.
Weapons aren't allowed at the event venue.
I'll show you a few moves. Watch and learn.
All right.
When someone grabs your shoulder,
use your elbow on the other side like this...
and push their arm down.
Easy, right? Now, try it.
You're grabbing my shoulder.
- Use my elbow like this. - Yes, that's it.
- And push it down! - Ouch, hold on!
That really worked.
Okay, show me the next one. Show me something else.
It's an extension of what I showed you.
When someone grabs your shoulder like this,
use your elbow in the same manner...
to take them down...
That's it?
Well, there must be something else after this.
Try to get out of my grip if you can!
That's it for today's class.
- We're done already? - Ask no questions.
Today, I...
I have a lot on my mind today. I have to go.
What's with him?
Jeong Hae Seong, you're acting so weird today.
Snap out of it.
Snap out of it!
Oh, my.
So, this is an NIS office?
Since you're now our honorary field agent,
we made an exception for you and brought you to our office.
Thank you.
My gosh.
- We closed the shop. - What?
The owner couple got into a fight in the US.
They returned earlier than expected.
What? Everything is happening so suddenly...
Do you have a cold?
Don't ask. I have a lot on my mind now.
Goodness.
Sir!
- It's a hot mess. - Why?
There's a civilian in Seok Ho's office.
I should have a word with him, right?
She's helping them with the mission. He told me earlier.
But I'm his manager.
He went over my head and told you?
Do you want some coffee-flavoured milk?
Come on. Let's go.
- Come on. - An Seok Ho, that little...
The Night for Byeongmunites will take place...
in the banquet hall on the first floor.
To solve the puzzle behind...
the third story, we must enter the chairwoman's office,
which is on the third floor of the annex.
The annex will be open for this special occasion,
but only registered guests can enter.
Hae Seong and Ms. Oh might struggle...
to pull off the operation if it's just the two of them.
So I want you to go inside with them, Yeong Hun.
- Yes, sir. - If needed,
Mi Jeong and I can back you guys up too,
but the students have already seen our faces,
so it'll be safer not to be seen together.
(Byeongmun High School, Annex Floor Plan)
(Annex 1st Floor, 2nd Floor, 3rd Floor)
During the operation, never forget...
that there are security cameras all over the annex...
and that there will be security guards in every corner.
Then how can we get to the chairwoman's office?
You'll have to go up to the third floor...
through the central staircase in the lobby.
The central staircase?
A teacher walking up the stairs in the annex...
with two students...
That will look very suspicious.
I'll try to figure out a way to distract everyone.
Okay.
Every year, the chairwoman has a tea session...
with the parents in the reception room...
halfway through the event.
Which means, she'll need to step out of her office for that.
That will be our golden chance.
Her office only has one door.
We have a fingerprint to open the door.
However, as soon as the door opens,
the entry record will automatically be sent to Seo Myeong Ju,
and it'll be saved on the server as well.
Even if you manage to get to the piano,
both you and Hae Seong will be expelled from the school...
if they find out that the two of you...
broke into the chairwoman's office, so brace yourselves.
What?
- What? - When you get to the door,
I'll step in remotely to make sure Seo Myeong Ju won't get the record,
so don't worry about that.
But anything saved on the offline server...
should be deleted manually in the chairwoman's office.
It's hard to make an exact duplicate of anyone's fingerprint,
but I tried my best to keep the error range to a minimum.
All right.
The operation will commence...
when the event begins at 8pm tomorrow.
Let's all...
do a good job and not make any mistakes.
Yes, sir.
(Byeongmun High School, Structure Map)
(How to get to the chairwoman's office)
- Thank you for coming. - My pleasure.
- There was no traffic. - Really?
Oh, wait. Take this.
- Thank you. - This way, please.
All right.
(The 24th Anniversary of Byeongmun High School)
I'm so bored.
We can't even drink. How boring.
I sneaked in some booze. Do you want some?
- For real? - Of course not.
You know you look cute together, right?
(Happy Catering)
By the way, do we really have to...
oversee the operation here...
Do we really have to do this here? This is pathetic.
Other teams use box vans as their control rooms. What is this?
Hey, the director said...
those who eat up tax money without doing meaningful work...
should be grateful for a minivan.
- Shoot. - Oh, no.
Darn it.
We'll do better.
You know how important today is, right?
I am expecting a special guest.
Please make sure everything goes according to the plan.
Do a good job.
Yes, ma'am. I will make sure.
You may go in.
I got in.
What's up with you two?
Nothing is up.
Mind your own business.
Hi, guys.
Hae Seong.
You look dashing.
- Oh, cut it out. - Whatever.
You call that dashing?
He looks hot.
Guys, do you know when Ms. Oh will be here?
But aren't men supposed to...
propose to women?
Really?
Then we're just engaged for now.
Propose to me properly later on.
When I'm wearing a really pretty dress.
(The 24th Anniversary of Byeongmun High School)
Hi, guys.
Oh, my. Are you really the Ms. Oh we know?
You look gorgeous, Ms. Oh.
You girls look even more gorgeous.
How could I beat high school girls?
How do I look? Do I look okay?
Well, not bad.
(The 24th Anniversary of Byeongmun High School)
Good evening.
See you later.
We'll kick off the night with Ms. Seo Myeong Ju's speech.
(The 24th Anniversary of Byeongmun High School)
Thank you. I am Chairwoman Seo Myeong Ju.
I'd like to express my sincere gratitude...
to all the parents, our students,
and our valued alumni for joining us on this meaningful night.
All right. I'll say this again, so listen up.
The moment Chairwoman Seo Myeong Ju steps out for the tea session,
we'll get rolling.
Then shall we have a toast?
Please raise your glasses.
Here's to our proud Byeongmunites...
and the future of our children.
- Cheers! - Cheers!
(The 24th Anniversary of Byeongmun High School)
Why is that punk eating nonstop?
Goodness.
When did you get that?
I sneaked in earlier. Do you want some?
You fools.
What are you doing? You're here to work!
- My gosh. Congratulations. - Oh, my.
Thank you, and thank you so much for coming.
I must say, the party looks even fancier than last year's.
You think so?
I'm glad to hear that. We worked hard for this.
- You made it. - Hey, Ye Na.
Hi, Ye Na. It's been a while.
Ye Na, you look prettier every time I see you.
- Thank you. - She really does.
Ye Na gets good grades...
on top of being pretty and easygoing.
She really is perfect.
You must be so proud of her, Chairwoman Seo.
My gosh. Both Seung Jae and Yeong Chae...
are amazing too, in every way.
Are you nervous?
Just a little. It's not too bad.
Come here for a second.
This injection will knock them out.
We should refrain from using this, but take it just in case.
I can pull this off, right?
- Turn around. - What?
It's a camera.
Do you remember what I said the other day?
I'll be sure to protect you.
I promise I'll keep you out of harm's way.
I'll make sure nothing happens today,
so don't worry.
Okay.
And...
you look pretty today.
Those two. What are they doing now?
They're still young.
Now,
we'll watch a performance...
by Byeongmun High School's choir, which was founded in 1980.
Please welcome the pride of Byeongmun High School, the choir.
- Please come on up. - Shall we head upstairs now?
- Yes. - Shall we?
- Let's go upstairs. Yes. - Let's go.
Stay away from carbs, okay? Go on.
(The 24th Anniversary of Byeongmun High School)
Chairwoman Seo Myeong Ju is going upstairs.
Yeong Hun, head to the switchboard room now.
When the cameras stop working due to the power outage,
Hae Seong and Ms. Oh will go up to the chairwoman's office.
The security office is about three minutes away...
from the switchboard room.
So, you must get in before those in the security office...
arrive at the switchboard room.
Are you all right?
I think they're ready now.
Let's give them another big round of applause...
- before their performance begins! - I'll be right back.
Put it on. It'll help.
Mind your own business and get out.
You're bleeding. Just put it on.
Ye Na, let's talk...
Did you do it again?
How could you...
How many times have I told you to just come to me instead of...
Why do you care?
Hey.
Mind your own business. Get lost, okay?
Know your place, please.
My mom was right, after all.
The dog I've been feeding thinks it's human now.
You're like my servant, Yu Jeong.
So, if you treat me like this...
I really pity you.
I mean it.
I deeply pity you.
Say it again.
Sure, I can say it over and over again.
I pity you.
At school, you act like...
you fear nothing as the student council president.
But in reality, you are...
Honestly, I don't even know anymore.
With the next song, our choir won first place...
in this year's National High School Choir Competition.
It's "Bravo, My Life."
All right. Let's give them a big hand!
You got this!
(The 24th Anniversary of Byeongmun High School)
- One late afternoon - One late afternoon
- I head home at sundown - I head home at sundown
- A life full of mistakes - A life full of mistakes
My, this is your favourite liquor, Chairwoman Seo.
(Byeongmun High School)
Oh, my.
- It smells amazing. - Right?
Chairwoman Seo, it's so elegant just like you.
Such important guests are here, so I should serve this rare liquor.
However,
this isn't the one I cherish the most.
- What? - Oh, my.
The founding chairman Seo Byeong Mun...
brewed this liquor himself to drink to celebrate...
a very important, historical day.
Fortunately or not,
that day has not yet come, and I inherited the liquor.
My plan...
is to share this liquor with you...
to commemorate the day...
Edu-City is completed...
and a new era truly begins.
That would be a glorious day.
I think a child's potential is decided the moment they're born.
Even when we buy a mutt in the corner of a market,
we pick the healthiest one.
We're even more choosy with people.
Students with no hope or future...
should be made to give up sooner.
Looking out for such kids and forcing them to study...
by giving them a fair chance for the sake of equality of outcome?
I think that's a waste.
We're already short on taxes.
One genius supports tens of thousands of people.
The world is led by the elite one percent,
and my plan is to fill that one percent...
with Byeongmun graduates.
More accomplished graduates ready to lead the new era.
Just hearing that got me excited.
Congratulations in advance on your new Edu-City.
Thank you so much, ma'am.
But you know, it may look like...
the new era is at our doorstep.
But until the very last moment,
we must all give our best efforts...
to ensure what we want comes true.
Or that time will never come.
Until the day the world of the one percent comes,
could you all please...
give one percent more?
We'll do everything in our power...
so you accomplish what you set out to.
Thank you so much.
How about a toast?
Why not?
For our own one percent.
For Edu-City.
For Byeongmun Foundation.
- Cheers. - Cheers.
Thank you.
How about we discuss...
the program for our kids?
I'm sorry. I droned on.
That's fine.
Principal Park?
Bravo, bravo
To my very own life
To our brilliant future
If you're ready, let's begin.
Yeong Hun.
I'm outside the switchboard room.
Hae Seong and Ms. Oh.
We're ready.
Okay. Let's do this.
Power cut, counting down. Three,
two,
one.
(Annex, Power)
(The 24th Anniversary of Byeongmun High School)
- What happened? - What's wrong?
Where's the staff?
Everyone! I'm sure it's nothing.
Calm down.
Calm down, kids.
- What's going on? - What's happening?
I don't know.
Go check it out.
It's a temporary power outage.
Quickly find out what happened.
Yes, ma'am.
Principal Park.
It's not a technical issue. It's an electrical malfunction.
It must be the switchboard room.
I'll check the switchboard room.
You secure the chairwoman's office.
Nice one, NIS.
- I didn't even see that. - We had no time.
We're heading to the chairwoman's office.
- Oh, good. - The power's back.
My gosh.
I'm sorry for the confusion. Shall we go downstairs?
The power shouldn't be back already.
- Go ahead. - Okay.
Excuse me.
Hello?
The power is back on.
(Flowing electric current)
Okay.
What's this?
What happened?
You said it would take him three minutes to get there!
I didn't know he walked so fast.
This is madness.
Don't worry, sir.
We still have...
a hidden card for emergencies.
Who's in charge here?
Sorry. Who are you?
Me?
What's his name?
I'm some student's dad.
How could there be a power outage during such a big event?
I fell down the stairs and almost broke every bone!
You look just fine, sir.
My back.
The fourth lumbar vertebrae!
No, wait.
Now we can go.
It didn't work?
Yeong Hun, I need more time.
I get it, sir.
Instead of freaking out here, why not go to a hospital?
Is this how you react when a parent says...
he fell down the stairs?
You!
Do you know who I am?
You took my boss to eat, bathe, play soccer, play basketball,
play baseball, and jogged with him too, right?
- You can go. - Come on. Get going.
Okay, fine. I'll leave.
Even if I must...
You can't smoke indoors.
It's a perfect day to smoke outside.
- Get out. - Leave.
Wait. Who are you?
- Leave. - Wait!
Darn you!
How could you do this to me?
What about the baby I'm carrying?
Go that way.
Hurry!
Who are you?
Stay close.
Be prepared to use what I gave you.
You want me to poke someone with it?
An honorary field agent should.
Enough talking. Moving in.
- Darn you. - You punk.
Move.
Sorry.
Come here!
Behind you!
What was I to you?
Was I just a one-night stand?
We only kissed.
You said...
you didn't like me.
You fool! Don't you see how I feel?
You tried.
What's wrong with me?
Good job. Thanks.
Yeong Hun, clean up for me.
Going in.
Agent Jeong. Over there.
- What? - Never mind.
Next, we'll sing Byeongmun High School's song.
Please stand up.
Let's sing the school song.
(The 24th Anniversary of Byeongmun High School)
The event's continuing. Now's your chance.
Shall we begin?
Let's begin.
Three, four.
What's wrong?
This key isn't working.
Is it broken? Then...
there's no point in playing.
Let's keep going.
Something might happen at the end.
Okay. Let's start over.
Our country shines bright
And so does Byeongmun High
So does Byeongmun High
Nothing happened.
What now?
Hae Seong, leave for now.
It's dangerous for you to stay.
Delete your entry record and get out of there!
We're leaving.
(Command prompt)
(Operation Plan, Undercover High School)
(National Intelligence Service, Operation Undercover High School)
(Mission: 24th Anniversary of Byeongmun High School)
(Outline)
(Personnel File: Jeong Si Hyun)
(File created on November 16, 2020)
(Undercover High School)
(Domestic Team 4)
Welcome to the NIS, Jeong Si Hyun.
Thank you.
You're a field agent,
so you need an alias.
A name our colleagues and I will call you by.
Have you thought of one?
- Si Hyun, let's eat. - Dad.
It says Liu Bei's other name was "Xuande."
What's the other name for?
("Romance of the Three Kingdoms")
To put it simply,
it's the name others call you by.
Long ago, it was rude for others to use the name...
your parents gave you.
I see.
- I want one too. - What?
I like stars, so I'll be called "Hae Seong."
"Hae Seong?"
You know, the word they use for comets.
It passes by our earth.
(Hae Seong)
Here.
This is it? You won't regret it?
No.
You can call me "Hae Seong" now.
Hae Seong.
Jeong Hae Seong.
I had no idea there was this side to her project.
Did you give up becoming a full-time teacher?
How many times did I tell you to leave the council members alone?
Could you help?
We must stop them somehow.
Let's go. Do it with me.
Did you forget what the mission was?
What have you been thinking since you were in...
the chairwoman's office?
It was Seo Myeong Ju who put me on this mission.
Jeong Hae Seong has been crossing the line these days.
Why does it feel like you're obsessed with the gold bars?
You could really die.
(A bonus clip is coming up.)
Are you stupid?
Do, sol.
Do, sol. That's it.
You can't even memorize that?
Sorry.
- Can we get through it once? - Okay.
Let's try again. Ready, and go.
Do.
Yes.
- Is that right? - Yes.