(Seo Kang Jun)
(Jin Ki Joo)
(Kim Shin Rock)
(Written by Lim Young Bin, Directed by Choi Jung In)
(Undercover High School)
(All places, organizations, characters,)
(incidents, and backstories in this drama are fictitious.)
(Episode 5)
Buddha.
Our Hae Seong...
My Lord.
(Wishing for a full score!)
(In the top 10)
(Wishing for a full score)
Please...
(3rd day of midterms)
(1st period: Korean literature, 2nd period: Society and culture,)
(3rd period: Math 1)
Begin.
(Byeongmun High School)
Someone needs...
to explain.
Surprise!
Hae Seong!
Gosh, guys. You startled me.
Surprise.
I guess this is our first time meeting.
You see,
I'm Hae Seong's boss at his part-time job.
And I'm an employee there.
I see.
Hello.
I'm Oh Su A, Hae Seong's homeroom teacher.
I see.
- And him? - He's also an employee,
but don't mind him and his narcolepsy.
Bury him under the covers.
There.
Why are people from his part-time job even here?
Sorry?
This doesn't seem normal if you ask me.
That you're here,
that you were in the closet,
and that you're wearing shoes.
Sorry. I'm not trying to be suspicious.
But you said this was a surprise...
even though Hae Seong was home all day.
Does she think she's Sherlock Holmes?
Hae Seong, I think I'm going to need...
answers to my questions.
Well, you see... Actually...
- Hae Seong! - Hae Seong!
Ms. Oh, how could you?
How could you be so cruel to someone sick?
Hae Seong, stay with me.
You can't die!
Don't you die.
Hae Seong!
Hae Seong, don't die.
Hold on. Hae Seong?
Don't!
You're one cruel lady.
But I... Hold on.
Are you all right? Excuse me.
Time's up. Hands on head.
Those in the back will collect the answer sheet.
Good work on the exam.
I'll see you at the end of school.
- Sure. Bye. - Bye.
How did you do?
What was your answer to question number 17?
Mi Jeong.
I've been thinking about us for the past few days.
Why are you out here?
Mi Jeong, these past few days...
Mi Jeong, these past few days,
I thought deeply about...
- my feelings for you. - What?
That kiss in the closet.
It was a first.
It shocked me to the core like never before.
Agent Park... Actually, no.
As of this moment, I'll see you as a peer.
You are a sinner who stole my lips.
If love were a crime,
you'd be sentenced to life in prison.
I've been giving you leeway only because you're my junior,
but this is how you repay me? What was that?
Go Yeong Hun.
Who do you think you are speaking to me...
like I'm one of your classmates?
Address me in that sense again,
and I'll crack your skull open. Got it?
Got it?
I'll dismiss what you just said.
Let's go eat.
Move it!
There are layers to her.
She's even more mesmerizing.
What's taking them so long?
- Tell me about it. - Let's have a glass.
You were already here.
- Where's Yeong Hun? - Behind you.
Right. Let's eat before the meat burns.
Enjoy, Mi Jeong.
I mean, Agent Park.
Why did you address her casually but in an awkward manner?
- Sorry? - Something happened, didn't it?
- No. - Yes.
Nothing happened, sir. Let's move on.
Did you do well on your midterms?
Don't ask him that.
I asked Yu Jeong today and got my ears chewed off.
Anyway, it was rough.
You also had it rough with the praying...
and such.
Here.
All right. This first glass is for us all.
- Good job, guys. - Good job.
Hae Seong.
Did anything happen between you and Ms. Oh since that day?
Not really.
I thought about it and...
she must find it suspicious.
Isn't it obvious?
You all fell out of my closet. That's more than chaotic.
You actually sound like a teenager now.
Stop it with that language. It's not you.
Anyway, we need to be more careful.
She's hard to predict which is why I'm mindful of her.
For the sake of this mission, I should keep my distance...
Why did he suddenly stop talking?
He has the face of a suspect...
who's for real guilty about something.
As if.
Hurry and eat. The boss is buying.
Go on.
What about Hae Seong?
It's more than just suspicious.
There could be a chance he isn't a student.
Oh, dear.
The suspicious man I saw in the old building.
He looked...
so much like Jeong Hae Seong.
That Mr. Gu he dragged...
to the Anti-School Bullying Committee.
How could a high school student...
have subdued a thug?
And what the weirdest was...
What a bunch of weirdos.
Darn it.
Is that 7665?
(Jeong Hae Seong)
That makes no sense.
How can a high school student drive a car?
And those three in that rooftop unit.
They definitely smell of something.
He must've repeated a few years...
and has a fake driver's license.
You said he openly had drinks.
His student record says he's 17.
Darn it, what's his deal?
My head's throbbing.
Having too many doubts is also a sickness.
Enough with the nonsense and drink.
Midterms are over.
Cheers.
He's not that guy, is he?
He is?
Who is she talking about?
Come on. Not again.
Don't be like this.
- What the... - Come on.
What is this woman doing here?
Hey.
Get a grip on yourself.
Excuse me.
You're at the wrong house, so run along.
You seem to be plastered. Are you all right?
My gosh.
Mom, did you catch a cold?
Your mom?
I'm not your mom.
You have the wrong house... Are you kidding me?
Mom, I love you.
I love you.
And thanks.
Su A is drunk.
Please let me in.
For your cute daughter.
- Mom, are you upset? - What on earth?
- Please don't be upset. - Why is she here?
What are you doing at someone else's house?
Have you lost your mind?
Get over here.
What a huge inconvenience.
- Oh, no. - Mom, someone's taking me.
What? What was that?
- Mom, it's bad. - What's wrong?
My mom won't open the gate.
Cut the nonsense and get over here.
- Hold on. You can't do this. - Come here.
Hold on. Goodness, I'm so sorry.
I'm afraid she drank a bit too much.
She's harmless though.
- Mom... - I'm so sorry.
- Open the gate. - Walk in a straight line.
- Good night, then. - Walk.
- Sure. - Go.
Where's your head at?
- But... - Unbelievable.
- My gosh. - Goodness.
Why are you pulling my arm?
Are you kidding me?
- You'll be the death of me. - Do better, okay?
- Mom! - Quiet!
Keep it down.
Please! What is it?
What now?
What has gotten into you?
You're killing me.
- Unbelievable. - My goodness.
You're making my life twice as hard.
- I'm exhausted. - Will you just...
- Does she live around here? - How many stairs are there?
Get in.
- Where? - Get in.
- Here? - Yes.
- Hello! - You've got to be kidding me.
This is bad.
Hey, don't our midterm scores come out today?
Yes. I think I moved up a few ranks this time.
How high do you think you ranked?
Tenth.
- Tenth? - Yes.
- Lucky you. - What do I ask from my dad?
- The purse that just came out. - A purse?
- Maybe... - Quiet, class!
The bell rang ages ago, you brats.
Today,
I have the results of your midterms which you were dying to get.
Groaning won't change the reality.
Come up as I call your names.
- Kang Gi Yeong. - Here.
An Yu Jeong.
Lee Ye Na.
Jeong Hae Seong.
Good job.
Oh Se Yeon.
How high did you rank?
Lee Dong Min.
(Class 1, Number 21, Jeong Hae Seong)
Here we go.
It's me. How did it go?
(Jeong Hae Seong)
- I think he failed. - You!
Agent Jeong, report your grades.
It's done.
I did it.
I ranked tenth in school!
- Yes! - Nice!
He did it!
What the...
I'm proud of you, Hae Seong.
I knew you'd do it.
Good job. Excellent work.
(Rank in school: 10th)
By the way,
how high did Yu Jeong rank?
What? Yu Jeong?
You have no idea how shocked I was.
Do you know what her rank is?
(Report Card)
I bet this is the first time Ye Na got crushed.
She sits in front of us. Read the room, will you?
Yu Jeong, good job on ranking first in school.
Unbelievable.
(Rank in school: 2nd)
Congratulations. You finally got to beat me.
Well, I got lucky.
A lot showed up from where I studied.
Luck is a part of one's ability.
You wait and see. I won't lose next time.
Right.
Did you see that?
(The 24th Night for Byeongmunites, 2025)
I heard Lee Ye Na lost to Yu Jeong.
Dozens of private lessons can only get you so far.
Have An Yu Jeong now take the reins!
She's been acting like a queen for being the chairwoman's daughter.
What the... No!
Did you read them all?
Have I been acting like a queen?
I'll be careful.
Ye Na, wait.
Invite me into that chatroom.
What a blast.
Wait, what? The chatroom?
Darn it.
Shoot.
Darn it!
When will she get off that high horse?
(Jeong Hae Seong)
(Attending high school but not actually a student)
(No matches found)
What could be troubling you?
Goodness.
One of my students has been a handful.
- Your back... - What?
Is it better now?
A few pain relief patches did wonders.
Your class starts soon. You should head inside.
Right, of course. I'll get going, then.
How long has he been behind me?
I apologize. I should've come by sooner to greet you.
It took me too long.
I know better than anyone that you're a busy woman.
You have a lot on your plate...
with Education City and all.
As you know,
there's no hope left for public education in Korea.
Low-grade equalized education...
has become a nuisance to students...
and their parents for far too long.
All I want is to provide...
an education that is perfect for our children.
Chief Editor Yoon,
it might seem absurd in your eyes,
but establishing a prestigious global private school...
and contributing to this nation's education...
is truly a dream of mine.
You must be telling me your grand plan...
in the hopes of me writing about it.
To be honest,
I have thoroughly read every piece of material...
you have ever written.
Lifting of the greenbelt...
regarding the educational industry in Seongju,
Byeongmun Foundation having first rights to negotiate,
and many other suspicions surrounding Education City.
I was most impressed with the piece you wrote on me.
The truth is what I seek.
I see.
By any chance,
if this was to persuade me in any way,
please think again.
But the truth...
isn't found but made.
I make what I want as the truth.
Join me.
You will receive...
whatever you desire and more.
I'll pretend I didn't hear that.
Chief Editor Yoon.
Goodness, my wrist.
If you don't take what I'm offering now,
my next offer will be bitter.
Sit.
Such nuisances.
Chief Editor Yoon of Seojin Daily.
Do a deep dive on him.
Yes, ma'am.
Don't the midterm scores come out today?
It seems as though Jeong Hae Seong...
will easily join the student council.
Really?
No way.
He's smart up top as well?
Does that deserve a prize or something?
- However, Ms. Seo... - Yes?
Ye Na's grades...
There's a change in her rank.
Here.
(Report Card)
(Rank in class: 2nd, Rank in school: 2nd)
Head to the school.
I can't believe you ranked tenth in school.
I thought you didn't care about your grades. Congrats.
Thanks. You guys can do it too.
Lee Ye Na.
Ye Na?
I heard you ranked second in school. Congrats.
And here. I'm applying to join the student council.
Put it on my desk.
I was going to, but they said I should give it to you in person.
Are you deaf? Put it on my desk!
- What was that? - Did you hear that?
You're done, right?
Lee Ye Na, is something up?
It's not my concern, but you don't look too good.
Reading people must not be your strong suit.
I'm doing just fine.
If you say so.
I'll leave it in your desk drawer.
(Mom)
My office.
Why didn't you come in?
Did the student council president check your application?
Yes, I saw her take it.
But who knows? There were two other applicants.
Two more?
And a disadvantaged student has never joined before.
They say they choose based on skill sets and personalities,
but connections are what get you in.
I can't say I'm surprised, but it sure is a bummer.
They're too young to be discriminating like that.
Well, let's focus on our task for now.
How can we win over the student council president...
so that Hae Seong will be picked?
Lay out your ideas freely.
I suggest a traditional approach...
with 1,000 paper cranes.
There are 4 of us, so we'll fold 250 each.
We can do it by tomorrow.
Right.
I'm revoking your right to speak.
They say that classics last forever.
Not traditional but classic.
You'll dress up as thugs...
and harass the student council president.
That's when...
Agent Jeong will enter the picture and be her hero!
I like it.
I guess I have no choice...
but to play the ace up my sleeve.
The ace up your sleeve?
You must be thirsty. Sip on it as you eat.
What the heck is this?
That's me being considerate.
I appreciate the gesture, but no thanks.
I have my own water.
Really? I didn't know that.
Have it instead, Yu Jeong.
I'll have it myself. See you.
What the heck was that?
I need to get close to her, but I don't know how.
What could be the issue?
Wasn't the leaf a nice touch?
Have you never had a girlfriend before?
Give me that face if you're going to waste it.
That leaf is something I'll never get.
Was he filming a period drama?
I found his dorky side to be adorable.
What?
I heard Hae Seong handed in his application.
What will you do about it?
I'll exercise my right as student council president.
(Newest student council member: Grade 11, Class 1, Jeong Hae Seong)
How was this even possible?
- Go, Jeong Hae Seong. - Hey, Hae Seong.
I just heard about your atrocious act.
You embarrassed yourself in front of Ye Na.
This is what I think.
Anyone would agree that a leaf...
It's a bit too stupid.
You should've come to me for advice.
I may not seem like it,
but women find me irresistible... No way!
How was this even possible?
I knew it'd work.
How sincere you are matters more than one's looks.
For some reason,
that doesn't sound right.
The arrogance.
I guess I'm flustered by this, but congratulations.
That being said...
- The snack bar? - The snack bar?
- Hae Seong's treat! - Treat!
(Detailed Student Record)
(Name: Jeong Hae Seong)
(Transferred from Gyeongsun High School in Haenam)
High school...
Hello, this is the teachers' office at Gyeongsun High School.
Yes, hello.
I'm Oh Su A, the homeroom teacher...
for Class 1 of Grade 11 at Byeongmun High School.
My gosh. Hello, Ms. Oh.
I'm surprised to be getting a call from Byeongmun High.
How may we help you?
Oh, I called...
to ask you about...
Jeong Hae Seong, the student who transferred from your school.
Hae Seong?
He got good grades and was athletic too.
He was very popular here.
I wanted to know how he was doing. Thank you for calling.
Hae Seong is doing well, right?
Of course, he is.
By the way, did Hae Seong ever...
Oh, the bell is ringing. I've got a class to teach.
Please look kindly upon Hae Seong.
Yes, thank you. Have a good day.
You too. Take care.
(Detailed Student Record, Jeong Hae Seong)
That was weird.
Ms. Oh?
(Notice)
- Hey, when did you get here? - Just now.
To register my ability to enter the student council room.
I see, but it can't be processed now.
Everyone in the admin office has left.
Ms. Oh, I need you over here.
Yes, I'm coming!
We'll do it together tomorrow.
The first student council meeting is tomorrow anyway.
Sure.
(Byeongmun High School)
(Detailed Student Record)
(Notice)
Thank you.
Are you going to keep avoiding me like this?
I won't tell Auntie and Uncle.
But can't you please tell me why you're being like this?
To you, your mission is more important than me.
I told you not to join the student council.
I even threatened you...
and said I'd tell everyone the truth.
So why...
Why would you ignore me like that?
I am not ignoring you.
You already know this. Because of my mission...
Right.
It's already been decided, so I won't bring it up again.
But please pretend not to know me from now on.
Yu Jeong.
Congratulations on ranking first.
What are you looking at?
Just something that's been bothering me.
What did you want to talk to me about?
Why Jeong Hae Seong?
There were other candidates...
who were more qualified than him.
I have the right to nominate new members.
I know you're the vice president,
but I don't think I'm obligated to tell you these things.
Are the rumors true?
That you're interested in Jeong Hae Seong.
Do you want my honest answer?
Yes, sir.
Did you get home safely?
Yes, I just got home.
Hey, it looks like Ms. Oh is suspicious of you.
Really?
She called Haenam to check with the school...
where you transferred from.
We managed to redirect the call and handled it.
But it really is dangerous, seeing how she actually called.
Don't even run into Oh Su A at school from now on.
- Do you understand? - I'll be careful.
(Student Council)
Now that you're a student council member,
we should move things along as quickly as possible.
(Jeong Hae Seong)
Be really careful around Oh Su A.
Avoid her as much as possible.
She's my homeroom teacher and the council's advising teacher.
How am I supposed to avoid her?
Why are you standing there? Take a seat.
Okay.
All right. Everyone's here, so let's get started.
It's nice to meet all of you.
I'm Oh Su A, the advising teacher for the council starting today.
I'll do my best to help you guys and work with you...
to further improve our student council.
And this is... You all know him already.
Meet Jeong Hae Seong, a new student council member.
I'm Jeong Hae Seong. Nice to meet you all.
Applause!
All right. That's it for this week's meeting.
- Good work, all of you. - Thank you.
(Byeongmun High School)
Why are you still here?
It's my first day. I want to take a look around.
You can get going.
Lock the door when you leave.
Of course.
What are you doing there?
I was just checking out the room. And you two?
We wanted to talk to you.
We waited outside, but you didn't come out.
Me?
Are you busy today? Let's have dinner together.
Dinner?
Let's celebrate you joining the council.
- Yu Jeong is coming too. - What?
You'll come with us, right?
Yes, let's go together.
All right, we'll do that.
Aren't you leaving too?
Yes, let's go.
You know, about having dinner with Hae Seong later.
Can I pass on that?
Why, all of a sudden?
I realized it'd be better for you guys to go without me.
Also, I have plans for the evening.
Didn't we already say we'd all go together?
You should've told us earlier.
It was sudden, so I was too flustered.
I'm sorry for not telling you earlier.
I don't like people who change their minds easily.
It's hard to take them seriously.
Wear something nice later.
I sternly warned Hae Seong to be careful around Oh Su A,
so let's try to be more careful too.
My gut tells me that she'll keep on suspecting him.
- Why, you... - We should...
just be really careful. That's the only thing we can do.
Or...
we could get rid of Oh Su A.
Don't say stuff like that while looking so serious.
You look scary.
- Hello. - Hello, come on in.
I'll take three large sandwiches...
and two whole pizzas.
The lemon-lime flavored soda too.
All to go, please.
Oh, you must have a big family.
- They're all for me. - I see. It must be your cheat day.
- Let's get it ready. - Okay.
Show me the kitchen.
Hey, I feel like we're NIS agents.
Focus, Agent Kim Ri An.
Yes, ma'am.
That's a camera, right?
She works with Oh Su A.
I told you. We should just get rid of her.
Just kidding.
Happy now?
I didn't see anything suspicious.
Don't waste your energy on useless things.
Just focus on your job.
Thinking that he might not be a student was plain absurd.
No.
There's definitely something.
Hey! Stop acting like you're an NIS agent.
I'm going home. You should call it a day too.
Ms. Oh.
- Come here for a moment. - Sure.
How are things in the student council?
Not bad.
They weren't exactly welcoming, though.
They'll demand special attention from you.
You know that, right?
The position was left vacant for a while,
so it won't be easy.
But please do a good job.
It was left vacant?
Then was there another advising teacher...
That's what I heard, but I don't know the details.
But I must tell you, I have high hopes for you, Ms. Oh.
I hope to keep you at our school for many more years to come,
not bound by contract.
Can I trust you and count on you?
Yes, of course.
- If you need anything, let me know. - All right, then.
Here.
These too.
Take care of these first.
They're our attendance and budget approval records.
It's not a lot. Just from the past year or so?
But I have to clock out soon.
Right, of course. You should clock out.
You can do it at home.
I love you.
I love you too.
- Bye! - Bye, get home safely.
What's the plan?
Wait, I think...
Bye.
- Bye. - Bye.
Bye, guys.
It's quite tricky.
- I see. - That's how it's done.
I'm going out.
Where? Are you not having dinner?
- I'll have dinner with my friend. - Stop!
Hey, is Hae Seong doing well at school these days?
I haven't heard from him for a while.
Whenever I ask your dad,
he just says it's top secret.
He must've finished the side dishes by now.
Tell him to give me a call.
And you don't care to know how I'm doing?
How I'm doing at school,
if everything's okay, or if anything's stressing me out...
You don't even want to know, right?
Well, you're...
You always do well, so...
Are you going through something?
Forget it. What do I even expect?
See you later.
Wait, Yu Jeong.
An Yu Jeong!
Darn it.
Oh, my.
This place looks really expensive.
How much does it cost to eat here?
It's on me.
Of course, I won't ask you to pay for this.
The chef said to take great care of you.
I'll take your order.
We're waiting for one more person. Give us a minute.
Yes, sure thing.
How come Hae Seong isn't here yet?
It was a good idea to meet outside of school.
Sorry, I'm late.
- We haven't ordered yet. - I see.
Have you been waiting long?
Not really.
Everyone's here, so let's order now.
Yu Jeong, ask for the menu.
Okay. Excuse me.
How does it feel to become a student council member?
I'm not sure yet.
I'm still trying to figure out how things work.
Why did you want to join the student council so much?
Knock, knock. Mr. Jeong Hae Seong, are you there?
Yes.
Just because. I thought it was cool.
Anyway, how did you two become friends?
Do we need a reason to become friends?
I'll be honest. Back then, Yu Jeong was...
Oh, I'm sorry.
We were classmates in tenth grade, so we became close.
I had a hard time adjusting to school,
and Ye Na helped me out a lot back then.
I did.
I saw the two of you talking in private the other day.
I thought you two seemed very close.
No, we're not close.
Your reaction is making you look even more suspicious.
What's wrong with being close?
Well...
Anyway, you two aren't dating then, right?
- What? - What?
It's all good, then.
Yu Jeong.
Pick up a new pair of stockings for me.
I've got a run because of my high heels.
What are you waiting for?
Nothing.
Sit down.
What's with that sigh?
I'll let this go,
but don't do this again.
What's your relationship with Yu Jeong?
Let's call it a night.
I had fun today.
Let's hang out together again.
Congratulations on becoming a student council member.
Thanks.
I'm off. See you at school.
Was Ye Na the reason you told me not to join the student council?
Yu Jeong.
- In my opinion, you two... - That's right.
I'm like Ye Na's servant.
When she has a run in her stocking, I go and pick up a new pair.
When she wants a coffee, I go and get that for her too.
Ye Na got me into the council when I wasn't even qualified.
In return, I have to do everything she orders me to do.
But so what?
I like this.
I like this setup, so what will you do about it?
Good for you.
Your curiosity has been satisfied.
Don't butt in like that ever again.
And don't you dare try to lecture me.
Please...
Please mind your own business.
I'm home.
Did you enjoy your meal?
It was okay.
The student council kids.
Did anyone object to Hae Seong joining?
Not especially.
But Mom.
Why did you want Hae Seong on...
Why...
did I tell you to let him join the student council?
The reason I didn't tell you why, Ye Na...
is because you don't need to know why.
I'm sorry, Mom.
Why did you take Yu Jeong with you?
Did you think I wouldn't know?
Ye Na.
There's nothing I don't know about you.
I thought it would be awkward without her.
And the others could talk.
Weren't you trying to put her in her place?
There's a new council member,
and she took your number one spot.
You wanted to show her who was boss.
Ye Na.
I am so...
disappointed.
That is so incredibly childish.
I'm sorry.
I won't do it again.
Or maybe have her kicked out of school.
When your dog forgets its training and acts out...
It's best to just get rid of it.
Because one day...
it starts thinking it's human.
Ye Na.
My sweet Ye Na.
Promise me something.
Promise from now on, you will never let anyone...
take your spot.
Promise.
(Hello, Agent Jeong Hae Seong.)
(Student Council Notice Board)
(Hello, Agent Jeong Hae Seong.)
Someone knows me.
This letter was left...
exactly when and where they knew I'd be.
So someone has their eyes on you?
Could the operation have been leaked?
It's a secret operation not even my superiors know about.
If there's a leak,
it'll be someone beneath you.
Haven't you been acting properly?
I'm sorry, sir.
Take this and find out why you were approached.
(Serving in the shadows to light the way forward)
(Director Kim Hyung Bae)
Leave.
(Director Kim Hyung Bae)
Yes, sir.
I want detailed reports on the staff and teachers...
at Byeongmun High.
Here.
You need something after a tough day.
Do you have any idea...
who sent that note?
You must find them soon.
Or this mission might be in jeopardy.
I'll check the school's CCTV tomorrow.
Send this to forensics for me.
Just wait until we find the punk.
Hey. It's better to smile when things are rough.
That's what the first class does.
You fool.
Here's a warning.
Find the sender, but look after yourself too.
If you get hurt...
and we find your dad,
I'd be too ashamed to face him.
I'll be careful.
(Serving in the shadows to light the way forward)
(Byeongmun High Faculty Member Files)
(Faculty Member Personnel File)
(Director Kim Hyung Bae)
What's the matter?
I'm not allowed to,
but I'll show it to you since you're on the student council.
Thank you.
(Cam 11-15, Main building lobby, Student Council Room)
(The folder is empty.)
What's wrong? Why is it empty?
Mr. Kim, what's up with the video files?
Where did they all go?
I don't know.
Is it because they checked the server yesterday?
But even so...
The videos were taken care of.
Good job.
What do you think, Principal Park?
Why do you think they did that?
They want something from Jeong Hae Seong...
or want his help, maybe?
It could be both.
Either way,
it's not good.
I'm beginning to wonder...
how much...
the person knows.
They checked the school server yesterday.
That's a suspicious coincidence.
I got nothing either.
There were no prints or DNA on the note.
Who could it be?
It smells strongly that someone deleted...
the CCTV footage on purpose.
It's the person who sent you the note...
or their accomplice.
A school employee...
who can enter the admin office...
or someone who doesn't want that person to be known.
Let's not jump to conclusions until we're sure.
The server reboot could be a pure coincidence.
If it's someone at the school,
they'll know by now that you checked the footage.
Go home early today.
Okay.
Why are there so many budget approval papers?
Thanks for your help.
Not at all. I liked it.
- You liked it? - What?
Numbers. I like to crunch numbers.
(Filed Records)
You teach math for a reason.
I'm not that special.
The room reeks of mold.
This room isn't maintained.
How is Hae Seong doing?
- Hae Seong? - Yes.
Ms. Kim said you said...
you thought he wasn't a student.
Did she tell you all that?
It's a secret.
Yes.
That's it.
I think that's it. Shall we go?
Yes.
- Thanks. - Sure.
(2003 Student Council Anthology)
(Hello, Agent Jeong Hae Seong.)
- Hello? - Agent Jeong.
It's been a while.
Do you remember my voice?
You won't tell the school, will you?
You have to keep it between us.
No. Don't press "record."
Are you the one who sent the letter?
We both have a lot to say. Let's meet.
Come to the school rooftop.
I want to speak with you only.
Come alone.
(Byeongmun High School)
The schoolgirl who killed her friend was found dead,
and that's when the rumor started.
"You must not be at school..."
"when the clock chimes."
"Crimson eyes..."
"will come for you."
Dad!
You forgot this.
Thanks, Son.
(Undercover High School)
Watch out!
Are you all right?
Dad!
Bong Ja, are you okay?
You're Bong Ja?
Si Hyun told me a lot about you.
I didn't tell you a lot about her.
How are you?
I'm taking Si Hyun out for a snack. Do you want to join us?
Come with us.
(Recreation Forest Field Trip)
(September 13, 2003)
Ms. Oh?
Do you know him?
(Hello, Agent Jeong Hae Seong.)
Why was this notebook at Byeongmun High School?
I had no choice. The man was too arrogant.
Agent Jeong Jae Hyeon's notebook.
It'll be a huge benefit to Jeong Hae Seong.
Is everything fine with Oh Su A?
You said you'd help and...
Hey!
What was that?
You could end up in danger too.
I can't tell at all...
what he's thinking or what he knows.
Tell me the honest truth.
Did you know about this, sir?
- Hae Seong. - I can't do this anymore.
I need to take a short break.
(Undercover High School)