I betrayed my friends.
The prisoner's dilemma.
If a prisoner betrays, it could ruin all the others.
But if they work together,
all of them would benefit from this psychological warfare.
When I first transferred to this school,
I hated all of you.
Does that count as a mistake?
I still hate them. I feel that quite often.
I secretly took pictures of other girls.
I mostly took pictures of their deltoid muscles.
I know it was wrong of me.
I'm...
good at lying too.
A long time ago...
Because you're so kind, I look evil compared to you.
Did you think you were some heroine of a movie?
Soo Ji. Don't be so mean.
Ja Eun. Don't be so kind.
Right. I deserve to be shot.
Ji Ae. Why are you acting like a saint all of a sudden?
You're the chatty one.
- Did you just diss me? - You're indeed chatty.
But I think she's fun.
Did you just smile? I told you to stop being nice.
Is this fun for you? Why are you smiling?
- Don't smile. - Why are you taking it out on me?
- You little... - What about you?
This is all we could think of for our mistakes.
What about you?
You know something?
Just now, you took a hit.
As for us,
we became one.
Look at her, acting strong.
Look at her.
Oh, my. Seriously.
Darn it. It's all messed up now.
Come on.
Ha Rin is sending you a signal.
Do you want Baek Ha Rin to go nuts again?
Stop them.
Ji Ae. Come here.
I told you to come here!
Do you think I can't come after you if you're not in Grade F?
- That's enough. - What?
- Get out of my way. Darn it. - Stop it.
You crazy jerks!
Darn you.
Look.
Let me see.
Call 911 now!
Sung A, Hurry!
- Oh, no. - Call now.
(Pyramid Game, Download the Pyramid Game app.)
(Leak contents, and you'll face the utmost penalty.)
(Pyramid Game)
(Episode 8)
Darn. Come on.
(Aunt)
I knew those reckless girls would cause a huge problem one day.
So how badly is she injured?
Okay. I got it, you punk.
Just wait. Got it. You little...
Darn it.
(Mr. Im, Year 2 Class 5)
It's all my fault.
I don't need your apology.
Making sure no one talks about this is our priority.
The girls, their teacher,
temporary teachers, and so on.
- This can't get out. - Of course, not.
I'll make sure that never happens.
When Mr. Kim arrives...
That injured girl, Sim Eun Jung.
Was she a scholarship student?
What on earth happened?
Who beat up whom?
Ko Eun Byeol set me up earlier, didn't she?
She got me to get involved, so I'd be in bigger trouble.
That was it, wasn't it?
Am I right or not?
Why did you figure that out after you attacked her?
I'm going to kill her.
Don't answer that. Darn it!
Where's Baek Ha Rin? Where is she?
You idiot.
Get a grip.
Do you think that witch is going to protect you from your father?
Quit dreaming.
You were so stupid to act like her slave all this time.
Come to your senses.
Seo Do Ah.
Did you just hear what she said?
How dare she when her father is my father's driver?
Do you think we're friends because I keep you around?
Know your place.
Why are you acting as if you're my friend?
You're...
nothing but my minion, Koo Seol Ha.
My servant and errand girl.
Got it?
Go, and bring me liquor.
Screw you.
Darn it.
Sung Soo Ji will win.
What?
She at least knows who's on her side and who's not.
Yes, Dad.
(A-hole Dad)
Things aren't looking good.
Right now, Eun Jung...
I mean, Kim Da Yeon who is not in Grade A beat up Sim Eun Jung...
who isn't in Grade F
She broke the rule, big time.
Which brings me to this point.
Please know that I'm saying this out of my loyalty for you.
Why don't we just get rid of the game?
Let's just call it school violence.
Of course. You're not a bully.
We'll take the blame.
I will.
It must be Pyramid Game.
What?
All right. We're going to play a game now.
You'll get a reward if you play well.
But you will be punished if you don't.
Isn't this fun?
We're playing a game now.
It must be...
a game.
Okay?
There's Ja Eun.
- Ja Eun! Let's play! - Ja Eun! Let's play!
- Ja Eun! - Ja Eun!
- Come now! - Come over here now!
- Come here, Ja Eun. Let's play. - Let's play.
Play with us, Ja Eun.
I knew it. You're not showing any sign of guilt.
- You're back. - I'm asking you just in case.
You're not thinking about reflecting on your action...
and stopping it. Right?
If there's a slight chance of that, tell me now.
I'll take it into consideration.
Why are you asking me that?
- What? - Ask Ja Eun.
Hey.
You need more clothes. Right? Do you want to borrow mine?
What?
Gosh. Take them back.
Do you expect her to fit into your tiny clothes?
- Here. Those are my clothes. - I brought mine too.
You guys.
You're over 174cm tall. Okay?
You're clueless about your own body.
Thank you.
Thank you. I mean it.
Gosh. Why are you guys so down?
Right.
What's the matter? Hey, something
Has spoiled the atmosphere
Of course, it only makes sense that our mood is down.
Is Eun Jung okay?
She'll probably call me once the exams are done.
Where's Soo Ji?
She stepped out for a moment.
Including Soo Ji, the five of us are the final group. Right?
Not yet. Wait.
What are they doing here?
Did Baek Ha Rin tell you to spy on us?
Or are you here to feel us out again?
Stop it, Jae Hyung.
They want to know how Eun Jung is. They're worried about her.
We're going to pick one of you to be in Grade F.
Raise your hands if you agree.
Ye Lim.
Oh, no.
I'm sure Eun Jung is all right. She has big, strong bones.
Anyway, you must be furious at Da Yeon.
Ha Rin and I are on your side.
People in Grade A will come up with a punishment for Da Yeon.
What do you want us to do to Da Yeon?
If there's anything you want, tell us.
Gosh. I was wondering why you wanted to see me.
Take that.
Then I'll take it that you'll leave it to us to decide!
You can't back out later!
That annoying attention-seeker.
(Ha Rin.)
Ha Rin. I did what you told me to do.
You still...
haven't heard from Eun Jung?
Her swimming coach is with her now.
I'll hear from them soon.
What was that?
Eun Jung...
was transferred to Seosim Hospital in Seoul.
She'll get surgery there.
I'm sure I won't have to point it out to you..
Since you saw what happened.
This was a careless accident.
Don't let your imagination run wild to write a made-up story online...
and spread rumors about the accident.
It's a cover-up.
He can't make this decision on his own.
Their parents.
The principal.
More than anything, Eun Jung's parents...
want this to be settled quietly.
Do you understand?
He's unbelievable.
Fine. Get rich with bribes.
Seriously, girls.
I told you to go easy on your pranks.
How is it that girls are rougher than boys?
Kim Da Yeon.
When we go back to Seoul,
you'll have to clean the hallway for two months. Got it?
Instead of calling for the school violence committee?
The school violence committee?
Didn't you girls say it yourselves? That this was a game?
Sung Soo Ji.
Aren't you too serious?
The school violence committee? That's ridiculous.
(Coach)
Eun Jung's swimming career might be over.
Please be there for her, and comfort her.
As for the cleaning punishment,
I can bring my housekeeper, right?
Gosh.
What a hassle.
Hey! Are you drunk?
- Hey! - You little...
- You jerk. - Stop it!
- Ye Lim. Stop it. - How will you fix this?
- How are you going to fix this? - Ye Lim.
You crazy jerk.
Darn it. Get your hands off me!
It's not like she's dead!
She's fine. She's not dead!
Get your hands off me.
I was lenient with you because your family is rich.
- What did you say, you jerk? - Ye Lim.
- You jerk! - Jae Hyung, stop Ye Lim.
How are you going to fix this?
- Jae Hyung, stop her. - Get your hands off me!
- Ye Lim! - Jae Hyung.
- You think I won't give you... - How will you fix this?
Penalty points on a school trip?
You said you wanted to be a celebrity.
Don't you care what goes into your student record?
- What are you doing? - It's okay.
- Ye Lim. - I told you guys to stop!
Get your hands off me.
Just shut your mouth.
I'm sorry!
Let's start the shoot.
A strip show.
You crazy jerks!
- Ye Lim. - I told you guys to stop!
Ye Lim.
Let go of me!
Ye Lim. Let go.
Let me destroy her...
to pieces.
Darn.
This is an announcement from Grade A.
A punishment for Kim Da Yeon will be carried out soon.
(A punishment for Kim Da Yeon will be carried out soon.)
What's this? What are you doing?
What are you doing?
So you won't give up on the game no matter what?
Fine.
Let's take it all the way.
Hey, Eun Jung. I'm here.
- Hello. - Hey.
You're here.
Are you okay?
You seem comfortable.
Did you eat, ma'am?
It's my fault.
(A missed call from Mom)
Ja Eun. You didn't answer your phone.
Did you arrive in Seoul safely?
Someone got hurt because of me.
I'm scared.
I'm so miserable, Mom.
(Study hall)
(Baek Ha Rin, Ko Eun Byeol)
(Kim Da Yeon, Koo Seol Ha)
(Choi Yu Hyun, Yang So Young)
(Do Mi Young, Choi Yu Hyun, Yang So Young)
(If you could stay anonymous, would you join us?)
(Social Studies and Culture)
(If you could stay anonymous, would you join us?)
I heard some rumors about Class Five.
The class with special privileges? What about them?
You know that the finals are around the corner, right?
Focus on your studies. Got it?
You irresponsible 18-year-olds.
Don't you want to go to college?
You know the swimmer? The national team hopeful?
Sim Eun Jung?
Her knee got busted because Kim Da Yeon beat her up.
(Seo Do Ah)
(Sim Eun Jung)
("Sim Eun Jung to Focus on Training to Join the National Team")
Their parents got the reporters not to publish any articles, right?
That swimmer girl's family is a mess.
The legal team from QB Group compensated the family handsomely.
They got the family to stay quiet.
Your class won't cause a problem, right?
You get Ha Rin under control for the time being.
Dad.
It's more critical that there aren't any news articles right now.
What do you mean?
(Messages)
This is a popular messenger app among the kids these days.
A rumor spread on this platform...
a national swimming team hopeful was bullied at school.
It spread to other community websites.
The hashtag is KDY.
Kim Da Yeon.
Wait.
Hello. Assemblyman.
Yes.
(Do Ah)
Yesterday...
Yes.
Well, the 12th...
I have the evidence.
Tell the chairwoman that you want to go abroad.
The evidence of my embezzlement?
Fine. Expose me.
I'm her son.
This game you're playing?
Aren't you old enough to know better?
How dare you do that at the expense of the company?
You know the word Grandma uses to describe you?
That you are sloppy.
How sloppy of you.
The evidence of your embezzlement isn't your Achilles' heel. It's me.
Don't you get it?
Do not provoke...
me.
Honey.
I just talked to Director Seo.
What's wrong?
(Study hall: The exam is around the corner!)
As I notified, Grade A will make an announcement.
During the school trip,
Sim Eun Jung in Grade D was assaulted.
The punishment for Kim Da Yeon in Grade B has been decided.
Starting today,
Kim Da Yeon...
won't belong to any grade.
That means...
Kim Da Yeon.
Come out.
Didn't you hear me?
Come out!
Kim Da Yeon will be forced to transfer.
Darn it!
How dare they? Darn!
No!
Darn it!
Good going. Seriously.
Keep going.
Sit down.
Get lost.
How dare you flip your finger at your teacher?
I'm here to help you. Got it?
How much can your father pay?
Well, you'll be transferred out of here.
Based on the amount,
we can tell your new school you were a victim.
What do you think?
Do you want to talk to him?
You stupid wench!
Get up!
Sir.
Nothing is going my way because of you. You stupid girl.
You!
Kim Da Yeon will be forced to transfer out of the school?
Seriously? That's crazy.
She'll transfer out? What?
Does it mean this incident was accepted as school violence?
- What did she say? - What?
She'll be forced to transfer out.
- Really? - Are you sure?
- What? - Seriously?
(Settings, Delete account)
If you tap on this, the account will be deleted.
They can't trace the account.
Easy, isn't it?
Here's the list of IDs and passwords you wanted me to make.
(IDs and Passwords)
Thank you. I'll share them with the girls.
So they'll spread the incident on this platform?
What is this? Oral tradition?
Well, that might show up on our exam.
Stopping the news articles is all they know.
Their parents won't be able to censor this platform.
I knew it.
You're one smarty pants.
I'll get going.
(Im Ye Lim)
Thank you.
That look on her face.
I've seen that before.
Ja Eun, are you...
Why?
Put Kim Da Yeon back in my class.
(KDY SV, BGHS School Violence)
Don't let anyone see you on your way back.
You go back to your class.
Put her back in my class.
You should've done better then.
You messed it up. Don't throw a tantrum at me.
Are you still nine years old?
I told you not to meddle.
I told you not to meddle with my game!
You're here.
I told her.
She cares about you very much.
What will you do?
The news article was published this morning.
("Baekyeon Girls' High School Rules with an Iron Fist Even with Pranks")
Why can't you do your job right?
I'm sorry.
Ha Rin.
Yes.
There's no better place...
than a school to practice your management skills over people.
Survival skills.
Leadership.
The tendency of placing yourself as the ruler.
My precious baby.
I will give you...
everything you want...
no matter what that is...
as long as...
you're not sloppy.
Go back to your class.
This is so good.
Kim Da Yeon is forced to transfer out of the school.
Is that enough to say she got what she deserved?
We still have Baek Ha Rin.
Right.
Three girls agreed to help us anonymously.
Oh Sung A, Yoon Ye Won, and Cho Yu Rim.
To get rid of the game, we must get more people to help us.
And as for the recording files, can you be a bit more patient?
I'm looking for a way.
I'll do everything I can to help you.
By the way, our crew finally got to have malatang.
I'm so touched.
When did this spicy and tangy sauce become the symbol..
Of friendship?
Talking about friendship... What about Ja Eun?
- What about Ye Lim? - She's training now.
By the way, I never imagined that I would be friends with Ye Lim.
Ja Eun said she wasn't hungry. She went home first.
Gosh.
Even Ye Lim is being strong. Why did she lose her appetite?
Goodness. That nosy fool.
She's big, yet cute.
Nosy?
No. The look on her face...
It was guilt.
The food here is so tasty.
(Ha Rin: Come out now.)
("Lieutenant Colonel's Connection Influences Military")
("Military Must Be Free of Corruption")
(Mom)
Hello.
So Eun told me everything.
Did you...
Ja Eun.
Did you really do that to your friend?
Is that true?
I'm sorry.
Mom.
Mom!
What's wrong with your eyes? They are swollen.
It's none of your business.
What?
Ha Rin.
Goodness. I've had a lot on my plate.
Girls.
I might have forgotten it. But how could you forget it too?
Do Ah.
Aren't the finals today?
Seriously. You little...
Separate your desks into individual columns already.
Do Mi Young. Song Jae Hyung. You guys are on the edge.
Move to the windows as closely as possible.
Come on.
(Sim Eun Jung)
Good luck with the exams.
(Math 2, Literature, PE)
Don't cheat.
(Sung Soo Ji)
Any questions?
Number 17 was added at the last minute, right?
Number 17?
- Right. - Hey.
- Number 3 for Question 2. - What?
- Okay. - Number 1 for Question 4.
Number one?
- Number 3 for Question 2. - Number 3 for Question 2?
Number 1 for Question 4. Number 1 for Question 5.
- Number one? - Do Ah.
What's the answer to Question 17?
- Number one. - Shoot.
Hang in there, girls.
There's a festival after the finals.
Good luck with the next exam.
- Gosh. - Can you tell me?
Four for Free Response Question One.
- Four? - Two for Question Two.
- You guessed it, didn't you? - It's 7 for Question 3.
- No. - I wasn't even close.
- Gosh. - That's it?
I know that.
Sine and cosine are different.
No?
Jung Yeon Doo gets good grades, doesn't she?
I think she got placed in Grade Two in the mid-terms.
Hey, where's Ja Eun?
What? She's not here.
Do you think she already bounced and went home?
It's none of your business.
Okay.
- Thank you. - Thank you.
I bet you want to drink soju.
Are you selling?
It's 50,000 dollars for 1 bottle since you're a minor.
What is it?
Ja Eun is acting distant...
all of a sudden.
What do you think about joining me instead of Soo Ji?
She sounds like a sociopath.
She has zero empathy for other people.
- I spent time with her, so I know. - Do you recognize her voice?
- Park Ji Young. - To be honest,
I wanted to be friends with you from the beginning,
- Ja Eun. - Ja Eun?
Don't tell me you secretly bugged her phone.
Don't badmouth my friend.
Soo Ji is cool.
That's why I respect her and like her.
I heard all about you, Ji Young.
You spy for Ha Rin, don't you?
Get...
Get lost.
You won't sell liquor to minors,
but you have no problem installing a secret voice recording app.
- You're a nut job. - There's a recording file...
from Baek Ha Rin's visit to Ja Eun.
If you listen to this, we'll be accomplices.
Deal?
Deal.
Shouldn't you say,
"I don't need to. I trust her" if you considered her a friend?
I must listen to it to trust her.
That's so typical of you.
Before that,
read this first.
("Lieutenant Colonel's Connection Influences Military")
(The personal information of the corrupt lieutenant colonel...)
(has been revealed as he was suspected of corruption.)
So what about the witness?
Those crazy jerks. Why did they do that in the barracks?
(It was confirmed that he received bribes from the corporate.)
You're not reporting this to the higher-ups!
Watch your mouth.
It wasn't an assault.
It was an accident for now.
Ye Won. Do you want to try some?
- Sure. - Ja Eun.
Can you pick up my earbud next to your feet?
What are you doing?
Ja Eun, let's go to the cafeteria.
They still have the melon bread.
Sung Soo Ji brought this upon herself.
Ja Eun.
If you mess up my pyramid...
That naive fool.
I'm going to turn Soo Ji into a school bully.
I'll be more persistent than you guys were...
when you got Kim Da Yeon kicked out.
- What? - Wherever Soo Ji goes,
what she does, or whomever she meets,
I'll make her live as a bully for the rest of her life.
Is that what you want?
Don't do that.
- Please don't. - Then stop being friends with her.
Go back to being an F.
Go back to your place.
Then I won't bully other girls.
Please do that, Ja Eun.
You owe me.
Don't you agree?
I...
I will...
go back to Grade F.
For the time being, Ja Eun will act...
like a bratty kid.
Give her time.
Why? What's going on?
I got it. Tell us our next plan.
There's no way our classmates didn't realize it after playing...
this crazy game for a year and a half.
That Baek Ha Rin started to crack.
And we became a strong unit.
Let's use that.
What?
I said I would get rid of the game.
I can't do it alone.
Can you help us, Sin Ye?
Let's be safe together.
All of us.
Hi, Sin Ye.
Hi.
What about Jung Yeon Doo?
She's one of Ye Lim's friends. Wouldn't she join us?
Sine and cosine are different.
No?
We'll hold off on her.
Something doesn't sit right with me.
Gosh.
If this fails, I'll be in Grade F.
But I'll make this work.
Don't you want to join us?
(Ra Hae Jun)
I'm in.
Just promise me that I won't be in trouble for this.
Ja Eun.
Whatever Baek Ha Rin did this time,
I wasn't scared this time.
"Let's play together."
Come to think of it,
that was what I wanted to hear the most...
when I was in Grade F.
So you should think about that too, Ja Eun.
You said we were friends.
What about Ja Eun?
Isn't she in your crew?
She has a family matter.
I have a question.
How come you guys didn't tell anyone about the game sooner?
I'm not criticizing you.
Even if this was called a game,
you must have sensed that something was off at one point.
This is school violence.
Because...
we couldn't be free of any wrongdoings, per se.
Until now, our domain was never violated.
As long as we didn't end up in Grade F,
we were safe...
if I'm being completely honest.
Right.
I would have done the same.
There will be 13 of us on the day of the game.
I'm contacting some girls now.
Thirteen? Then what happens once there are thirteen of us?
We will be the majority that day.
And we'll quit the game.
Quit the game?
How?
This was always emphasized in our class.
That this was everyone's game.
Once the majority of us quit the game, there won't be any game.
For this strategy to work, we must trust each other a lot.
This ironclad strategy of hers doesn't match her personality.
That's what I thought too. Jinx.
Wait. This strategy sort of sounds like...
Right.
I wouldn't have come up with this if it weren't for some naive fool.
I will...
go back to Grade F.
(Sim Eun Jung)
(Im Ye Lim)
(I heard you were going to perform at the festival, Ye Lim.)
(You have no idea how badly I'm waiting for that.)
It's different from the last one, right?
It is.
You just have to install it secretly and press the power button.
Are you sure about this?
You got the recording files. I'm sure you heard everything.
Ending the game isn't enough.
I must finish Baek Ha Rin. That's my final goal.
That's why I need this.
Good luck.
I'm going to need it.
(D-Day)
The last Thursday of every month.
The day of Pyramid Game.
(Baekyeon Festival)
Hey!
(Look forward to the surprise guest!)
Ja Eun.
Hey, Ja Eun!
Hey!
Don't act like my friend.
What's this?
Why did my heart flutter just now?
A Maltese is pretending to be a Doberman.
That was stupidly cool.
Ja Eun, can you scowl at me more?
Are you okay...
Did you see that?
Her body is as sturdy as a Michelin tire.
By the way, what's the matter with her?
It's like she's gone back to her old days.
Did she bomb the exams?
You really have no idea about Ja Eun.
She never got good grades, anyway.
Come on. Hurry up.
(Baekyeon Girls' High School Festival)
(Congratulations on your debut, Ye Lim!)
Im Ye Lim!
(National Treasure, Ye Lim)
- Im Ye Lim! - Im Ye Lim!
Im Ye Lim!
You rock!
(Im Ye Lim)
(Congratulations on your debut, Ye Lim!)
Im Ye Lim!
Ye Lim!
- Im Ye Lim! - Im Ye Lim!
(Bread)
(Love Always Runs Away)
- Enjoy. - Thank you.
- This is so pretty. - Oh, my.
- You can take it. - I like them a lot.
Sure.
I'll see you at the swimming pool.
That has to be it. Come on.
(Transport Vehicle for Students)
It's all set. We got this.
- Okay. - Let's do this.
- Let's go. - Let's do this.
We got this.
(Pyramid Game)
(Thursday, November 30)
(Safety First)
(Baekyeon Girls' High School Festival)
You know...
(Thursday, November 30)
What about Sung Soo Ji and Im Ye Lim?
Why didn't you ask for me, Do Ah?
I'm still in this class.
What's going on?
Isn't that Im Ye Lim?
- What's happening? - What is this?
Hey, go back inside!
- What's going on? - Go back in. Or you'll be punished.
- Oh, no. - What happened?
- I can't believe this. What? - No way.
What happened?
Which class is she in?
Because of you...
(Pyramid Game)