'S LINE'
(A red line connecting people who've had sex.)
Seon-ah.
Kang Seon-ah, open your eyes!
Kang Seon-ah!
(Central Operating Room)
Where's Seon-ah?
Why were you at school at that hour?
I went to see Seon-ah.
You went to see her?
She called me.
She said she was going to school.
Why would she go to school at that time?
I don't know either.
I don't know about anything else,
but Seon-ah...
It definitely wasn't suicide.
Hasn't the Korean language teacher arrived yet?
Call him quickly!
Why is he late on a day like this?
I called him, but he didn't answer.
How do you even manage your students?
How could something like this happen at school?
If she wanted to die, she should've done it at home.
Why jump from the school building of all places?
Head of Academic Affairs!
Don't you think you're going too far?
And that student is still alive, okay?
Ms. Lee, have you done anything right to talk like that?
You're also responsible, you know.
Yes, I am responsible.
Aren't we all in the same boat?
But why are you blaming the student?
When did I blame the student?
You clearly said it was the student's fault!
- I understand Ms. Lee's position. - Did I say something wrong?
- Talk to me directly. - Ms. Lee, stop talking.
This isn't something Ms. Lee should be holding me accountable for.
I'm not holding you accountable for this right now.
Are you okay?
Anyway,
this incident...
Try to keep it from spreading.
Please, all teachers, keep this confidential.
He smells like cigarettes.
Your teeth will turn yellow like that.
Your teeth are f***ing yellow. They're like burnt rice.
Hey!
Why isn't Kim Hye-yeong at school?
What a coincidence. Kang Seon-ah falls, and she doesn't show up for school.
Maybe school is too boring, so she doesn't want to come.
I don't know.
Teacher, it's all my fault. She's a student from my class.
It's not your fault at all.
Isn't she the student who almost had the School Bullying Prevention Committee convened last time?
By the way, is the Korean language teacher still not answering his phone?
Exactly! It's so strange. He's never done this before.
Ugh, this is so annoying.
Is there no good news?
It's always school bullying and suicides, all this nonsense.
Mr. Kim.
Yes?
Didn't you say you went to propose?
Have you decided on the wedding date?
I'm not getting married.
(Apartment)
Just put it here.
Ah-yul, say hello to your uncle.
You should greet people when you see them.
This is for you.
Ah-yul.
Are you shy?
Is that all your luggage?
I'll only be here for a week before I leave.
I've already shipped the rest of my luggage.
Why are you suddenly going to Canada?
Giving up a perfectly good job, really...
Have a seat.
This is your first time at my place, right?
How do you like it?
It's pretty good.
You moved here last year, right?
No, I've been living here for over two years now.
Time flies.
I owe it all to my husband, Kim Byeong-cheol.
Should I call him brother-in-law?
What did you say?
I'm staying here. Did brother-in-law say anything? Is he okay with it?
Of course he didn't say anything. You're my brother.
Besides, he's very busy with work.
You probably won't even get a chance to see him.
Let me see.
Alright.
You said you'd continue working at school until you leave the country, right?
Yes.
Wait a minute.
Kang Seon-ah.
At least get up and yell at me.
You're looking for evidence, aren't you?
Kang Seon-ah!
I know her pretty well.
She's not just any tough cookie.
Suicide?
That's hilarious.
And Kim Hye-young, who enjoyed bullying Kang Seon-ah every day, didn't come to school the day after Seon-ah's incident.
That's also super suspicious.
Who are you?
I'm Lee Kyung-jin from Class 5.
If this wasn't a suicide but a murder,
the most suspicious person would be someone close to her.
Because Kang Seon-ah was ostracized...
No, wait.
Come to think of it, she seemed to have made some friends recently.
She's not dead.
What?
I said Seon-ah is still alive.
Oh, right.
My bad.
Oh, yeah. You two were pretty close, weren't you?
Where did you get these glasses?
I got them at an optical shop.
When did you get them?
Last year.
Then why haven't you worn them before?
My eyes get uncomfortable when I wear contact lenses.
Teacher.
What is it?
Do you know whose glasses these are?
I'm not sure.
What's wrong?
Nothing, they were just on my desk.
Then they must be yours, teacher.
Try them on. They might suit you well.
Okay.
I'm sorry.
I should have paid more attention to her earlier.
As a homeroom teacher,
I didn't even know what my students were thinking.
So, you think it was a suicide?
What?
Currently,
it hasn't been ruled a suicide yet.
Anyway,
if there's anything I can do to help, I will.
Please let me know anytime.
That student who used to bully Seon-ah,
is she at school now?
That student is currently...
missing.
Missing?
Right.
And this student?
I found this in Seon-ah's bag.
It seems to have been taken on the day of the incident.
Are you Lee Ji-won?
Yes.
I'll get straight to the point.
What was your relationship with Seon-ah?
We had no relationship.
If you had no relationship,
would you two take pictures and go on a date together?
She asked me to hang out first.
She asked, and you agreed?
Yes.
It was just...
interesting.
The outcast suddenly changed her personality 180 degrees.
I already knew she was interested in me.
Was there anything unusual when you two were together?
No.
It was very normal.
What did you do at the cafe?
Can I be honest?
We talked for a bit, then we kissed.
I wanted to go further,
but she refused.
Then where did you go?
Oh, right.
After we took the photos and came out,
she suddenly ran off like a crazy person.
She said something about losing something.
(Han Ji-hyuk)
(Oh Dong-sik)
(Sinu Green Park 2)
Let's all have a toast.
Okay.
I'm really sorry to suddenly impose on you like this.
Oh, come on.
Why are you being so formal?
Brother-in-law.
I can call you brother-in-law, right?
Yes, please feel free to call me that.
But, you know,
you two don't look alike.
He's too handsome.
Cheers!
Can I ask you something?
Sure.
I heard you were about to get married.
Why did you suddenly break up?
Honey.
Don't ask.
It's fine. Just wait a moment.
We'd been living together.
But before we got married, I saw...
I took time off work and went home.
And I saw her in bed with my friend.
This person... No.
Our brother-in-law.
Wow.
You did very well.
If you can find out about this kind of thing before marriage,
that's when people say your ancestors are looking out for you, right?
I really admire that. Truly.
Come on, let's have a drink.
Okay.
Pour me one too.
- Is it okay? - Mm.
We're out of alcohol.
Seriously.
I'm sorry.
It's fine.
Seriously, work stuff.
Messages keep coming in.
Brother-in-law.
What subject do you teach?
I teach English.
Very nice.
Sounds good.
Well, because of my job,
I often interact with foreigners too.
By the way, brother-in-law.
Do you know what foreigners like most
when they come to Korea?
Do you know?
Take a guess.
You haven't been in touch with your sister for a long time, have you?
That's right.
I don't usually answer her calls.
Yeah.
You should keep in touch more often from now on.
After your parents passed away,
it's just the two of you left to rely on each other.
That's right.
You should keep in touch often.
Oh, excuse me.
No.
Darn it, I pressed the wrong button.
Brother-in-law, where are you going?
We're on the 10th floor.
Okay.
My brother-in-law can't hold his liquor.
Bro, I'm telling you, it wasn't suicide.
How can you just cover it up without investigating?
Detective Han, what cover-up?
The doctors at the hospital said the same thing.
They said there was no external force involved.
Let's be frank with each other.
You...
Did you already know your niece was being bullied?
It could be suicide, you punk.
That's why we should investigate further.
It might not be a simple suicide.
Ji-wook.
The higher-ups want us to stop.
The school foundation is also strongly against it, they hate it.
The school already has a huge headache with the suicide issue.
Do you want to drag a murder case into this?
That's too much, kid.
I understand how you feel more than anyone.
Just turn a blind eye for now, okay?
Okay?
If it were your child in the hospital, would you do the same?
You little punk...
You're crossing the line now.
You crossed the line first.
What?
Hey, Han Ji-wook!
Han Ji-wook!
(Enter password)
Damn it, seriously.
Bro, that can't be unlocked.
Even the US said it's difficult.
(Lee Gyu-jin)
You're wearing glasses!
They suit you well.
Thank you.
It seems there's still no news from the Korean language teacher.
Exactly.
Teacher, if you...
If you found out someone close to you was having an affair...
What would you do?
Me, I'd...
But can you be sure what you saw was real?
I'd want to tell everyone everything.
And watch the drama unfold with my own eyes.
Like a morning drama.
Okay.
You were so shy at first.
Do you like your uncle the most now?
You should hold Mom's hand too.
That's really funny. So funny.
- Who's Oh Tae-seok? - What?
That was sent to the wrong address.
But the address is correct here.
No, that's for unit 401.
Sometimes they write the address wrong.
- I'll take it. - No, don't worry.
You and Ah-yul go inside first. I'll take it.
Just leave it at the management office.
- Okay. - Mm.
Ah-yul, want to try?
(Recipient: Oh Tae-seok)
(1002, Building 613, Insum Serenity Phase 3 Apartments, 22 Jeongun-am 17-gil, Seodaemun-gu, Seoul)
Unit 401?
Yes, honey.
I'm at the front door.
It's so heavy, my arm is about to break.
Didn't you say I could buy anything?
Another package arrived.
It's not mine.
This is your package.
Well, I don't know.
(Oh Tae-seok)
(Ms. Kwak Chae-rim, 401, Building 613, Insum Serenity Phase 3 Apartments, 22 Jeongun-am 17-gil, Seodaemun-gu, Seoul)
Kwak Chae-rim.
Ah-yul.
Come, let's bow to Grandma.
Okay.
Come, let's bow to Grandma.
- Where's brother-in-law? - What?
He said he's in Gumi.
He can't come back today either?
If he goes to the Gumi factory,
he usually stays for two or three days before coming back.
Noona, are you happy being married?
Yes, I'm happy. Just like everyone else.
Living life while raising a child.
Noona, you should go to a dermatologist for some treatment.
Brother-in-law earns so much money.
Kim Jung-woo, you've changed a lot. You even nag now.
Mom should see you like this.
Jung-woo.
You...
The reason you broke up,
it wasn't because her family talked badly about you having no parents,
was it?
It wasn't because of that.
Didn't I tell you? She was two-timing me.
But it's good to be able to pay respects to Mom with you.
And when we visited Dad's grave...
Noona, you're not still in contact with that family, are you?
Um... well...
Sometimes, if Uncle calls...
Noona, are you crazy?
After Dad cheated, how did Mom live?
Have you forgotten all of it?
What were you thinking, contacting them?
No, I just...
You were young then, so you might not know...
I had planned to marry Soo-yeon as scheduled.
We lived together for six years, and I thought I could just pretend it never happened.
Because she said it was a momentary lapse.
She cried even harder, saying it was all her fault.
But at some point,
Dad's face kept appearing in my mind.
Dad must have bowed his head and admitted his mistake at first too, right?
Was this how Mom felt?
The face I loved the most
overlapped with the person I hated the most, every single moment.
I still love Soo-yeon.
I miss her a lot.
But because of Dad, I can't face her.
Even in death, that person is still tormenting me.
- Are you crazy? - What's going on?
Is this real?
Seriously, not a single day is peaceful.
This is ridiculous.
- I never expected this. - Is it really him?
- The Korean teacher... - How could this happen?
Hey, come here quickly...
It's Kim Hye-yeong and the Korean teacher.
What should we do?
Stop lying!
The Korean teacher turned the tables on you!
(Do Not Enter. Under Investigation)
I am Bang Seong-jin, a Korean language teacher at Bangju High School.
During this period, I maintained
an inappropriate relationship with a student.
I am deeply sorry to my family.
When this matter was exposed,
I could not bear the ensuing shame and guilt.
Therefore, I wish to end my life.
I sincerely apologize to everyone
for the controversy caused by my actions.
Hyung, don't touch that.
I'm wearing gloves.
(Suicide Note)
What time did they estimate the death to be?
Um...
We'll need an autopsy to confirm,
but it looks like the body has been here for at least three days.
It doesn't seem like he died here.
What?
The car was just left in the middle of the parking lot.
Does it make sense that it was only found three days later?
The photos were posted on the school website today.
This means he already knew it would be exposed.
There's definitely someone behind this.
Hey, class president.
We're going for tteokbokki. Want to come?
- Sure. - What?
What's wrong? You always refuse.
Don't tell me you're interested in me.
Or are you interested in Hyeon-heop?
(Bangju High School)
Hey, get in the car.
Who are you?
Who is he?
A resident.
You can't park here. Get in the car, quickly!
Hey, mister!
What right do you have to tell us to get in the car?
Mister?
Yes, mister.
This is kidnapping, isn't it?
Who kidnaps someone in broad daylight like this?
You're just a crazy old man, aren't you?
Hey, call the police!
Call the police quickly!
Do you want me to call the police for you? Wait.
Oh, the police are here.
Get in the car quickly.
You're her friend, why haven't you come to see her?
I'm not doubting you.
You said it yourself,
she had no reason to commit suicide.
Why do you think Seon-ah returned to school that night?
Have you seen
Seon-ah's glasses?
Glasses?
Hey, explain yourself clearly.
What are these glasses you're talking about?
Is Seon-ah also connected to those glasses?
Please,
find the glasses.
Then I'll tell you.
What are you going to tell me?
Taxi.
The keys are in the car.
Oh, let's eat.
Are you satisfied?
Before we eat,
what's this?
Huh? What is it?
What is this?
It's beautiful.
It's embarrassing to do this.
Come on.
Let me put it on you.
Here.
Let's eat.
Hello?
Hello, brother-in-law? It's Jung-woo.
Oh.
Brother-in-law, what's up?
Are you busy?
Uh, I'm in a meeting right now.
It's not a good time to talk.
Where are you?
Right now?
I'm not in Seoul.
Uh, I'll call you back later.
Brother-in-law.
I can't reach my sister.
Oh, really?
Uh, I...
I'll try to contact your sister.
Alright, I'm hanging up.
- Just a moment. - Okay.
Who is it?
Room service.
Hello?
Bro... Brother-in-law?
Let go!
Let go of me!
What are you doing?
What do you think you're doing, brother-in-law?
Uh...
Brother-in-law, this situation...
This situation can certainly be easily misunderstood.
This is my privacy...
No, that's not what I meant.
This won't do your sister any good.
You're quite self-righteous.
Shouldn't you apologize first?
Okay.
Okay, I'm sorry. I...
I'm truly speechless.
Wait.
I understand.
I'll... I'll end it here today.
I promise.
But give me a little more time.
I'll really keep my promise.
Okay?
Please make sure to end it today.
Otherwise, I really don't know what I'll do.
Brother-in-law...
Don't tell your sister, okay?
When can we meet again after you go to Canada?
We just got in touch, we can meet anytime.
Overseas isn't that far in this day and age.
I'll call you often.
You have to keep in touch with me.
You too. If anything happens, you must call me.
When Yul wakes up and can't find her uncle, she'll throw a fit again.
This isn't much money.
Just take it and use it.
- I don't need it. - Go.
Hasn't brother-in-law contacted you yet?
What?
He'll come back when it's time.
It seems he's busy with something.
Keep in touch.
You don't need to see me off.
The morning drama...
Was it resolved smoothly?
No.
I'm not too sure.
Probably.
The school is in chaos right now.
Even you're leaving.
I feel a bit conflicted.
Thank you very much for this period.
By the way, have you found Kim Hye-young?
No, not yet.
Who uploaded that photo?
Well...
Many people could have.
And I heard that photo was already circulating on students' social media.
(Ms. Kwak Chae-rim) Kwak Chae-rim.
I'll help you put it on.
Come on.
(#PregnancyAnnouncement #WelcomeBaby #SeeYouNextYear)
This lunatic.
The number you have dialed is not responding...
Hello, what can I help you with?
My passenger said they want to go in.
Excuse me, driver, please wait a moment.
Hey, customer...
- What's going on? - Call an ambulance! -Hurry!
-119! -Call 119! -Call the police!
- Oh my god! -What's happening? - Call the police!
Why is that person doing this?
Hurry, call the police!
- What on earth is going on? - Oh my god, pull yourself together!
- Oh my god! - What's happening?
- I told you to call an ambulance! - No, that's not it...
- So I said... - Please, pull yourself together!
What do we do?
Noona!
Noona, are you okay?
Noona, open the car door!
She's getting out of the car...
Are you okay?
Noona, I'll handle this.
Noona, you and Yul...
Jung-woo, why did you do this?
What do you mean?
What's wrong?
Why did you do this?
Noona, why are you acting like this?
Why on earth did you do this?
What's going on? Damn it!
- You... - Oppa!
Are you okay?
Oppa, she suddenly drove over and kept hitting us.
It's okay, it's okay.
Let go, you punk!
What's going on?
Are you even human?
What are you doing right now?
Let go, damn it!
Don't do this!
Don't do this, Jung-woo!
Damn it!
What does he mean by that?
They seem crazy.
Let's go.
That person isn't my husband.
That person isn't Kim Byeong-cheol.
That person's name is Oh Tae-seok.
He's that woman's husband.
He rushed over because he was afraid I'd kill his pregnant wife.
Jung-woo, I...
I...
I'm the mistress of that man.
What do you mean by that?
Didn't you say that?
Tell him to get rid of his mistress and go back to his old life.
Jung-woo saw me with Chae-rin.
He told me to end the relationship that needed to end.
Chae-rin is also pregnant. I think this is the right thing to do.
How can you drive like that? The car's broken!
Mom.
Uncle, why are you crying?
Is Mom not feeling well?
No, it's nothing, Ah-yul.
How can someone's will be written so carelessly?
A Will...
A Will.
Where are you going?
Home.
Hyung, isn't your home here?
(Motel)
(Urgent: Front Desk Part-Time Job. All ages welcome, beginners too!) (Same-day pay guaranteed. Must be punctual.)
Hey, sunglasses.
Why aren't you answering your phones?
Are your phones just for decoration?
The glasses you mentioned, are these them?
The glasses Seon-ah was wearing.
Are those the glasses you're talking about?
What exactly can you see when you wear those glasses?
S-Line.
S... Line?
(Lee Soo-hyuk)
(Arin)
(And Lee Da-hee)
So you mean someone took Seon-ah's glasses,
then called her to the rooftop,
and pushed her off?
But it seems she was threatening many people
with the fact that she could see the S-Line.
Even those who haven't had sex are there.
Teacher, do you have a girlfriend?
Well, I've had sex with many men during this time.
What kind of glasses are those to cause all this?
If you wear those glasses,
you can know who you've had sex with.
Last night, another random murder occurred in the Gangam-dong area.
Is it possible
there's not just one pair of glasses?
Are there... multiple pairs of glasses?
'S LINE'
(The red line connecting people who have had sex)