Adults say
that a school is a safe
and innocent place.
DIARY OF GOOD DEEDS
It's a place free from violence.
However, the outside world...
brings violence into school.
Is it true?
Why are you slacking off?
Finish your work.
I have other things to do.
That's your problem.
I have time.
Wait.
If that hits me,
I will report you to the PTA.
I'll tell them what you did.
What?
Such a shame.
Are you scared of the PTA?
If that's how you feel,
then we'll just stay here.
You won't be the only one that doesn't get to go home.
No one here will go home.
Why?
It's his problem. I can't stay here.
I have to work on activities to welcome new students.
Me too. I have to go home
to edit my YouTube videos which I upload every Tuesday.
If you want to leave,
tell Koh to finish his work.
I want to go home, too. My daughter is waiting.
Koh.
Koh, do your work.
What if I don't?
Give me your work.
I'll do it for you.
No.
He has to do it.
Koh, do it now.
Think about your friends.
Fine. I'll do some work for you.
I will do this one for you, Kaew.
I will do this one for you, Duang.
As for this question,
I will do it for his daughter.
Daddy.
Tang.
I don't need to do it for her now.
His daughter is here.
This damn kid came in at the worst time.
Daddy, can I play a game?
Sure.
Look at that.
If she gets to play games,
I'm not doing my work.
Koh.
Close the door.
-Close the door. -What on earth are you doing?
-Just close the door. -What the hell?
Get out of the way.
What's going on? What the hell is going on?
Close the door.
What's going on?
-What happened? -I don't know.
I heard that a prisoner escaped.
They're in our school uniform and stabbing people.
-That's why we ran here. -What?
Is that true, Suer?
Yes, I saw it with my own eyes.
A kid was stabbed in the throat
over and over like this.
I also heard that someone got their face slashed.
How many of them are there?
I don't know.
Hang on. Just calm down.
Block the door with the chairs and desks.
Come on.
Right here.
Stop.
Do it quietly.
Do you want them to hear us?
Turn off the lights and close the windows, too.
Be more quiet.
Koh.
Why aren't you helping your friends?
Gather here, everyone.
Keep as quiet as you can
so the prisoners don't know where we are.
Do I still need to finish my homework?
Koh.
I'm just curious.
He was so serious about it.
Fuck you, Koh.
Can you shut up?
The prisoners will hear us and come and kill us all.
Are you guys insane?
Do you really believe what these two said?
If you don't believe us, go and see for yourself.
You're cowards.
Listen up,
all students and staff.
There is an emergency in the school.
A serial killer convicted of eight murders
has escaped from prison.
The prisoner is dressed as a student
and has already injured three of our students.
I want everyone to remain calm
and stay in groups
until the next announcement...
Are the prisoners gone?
How am I supposed to know?
I saw you using your phone.
I'm trying to call for help, but I can't.
There's no fucking reception at school today.
Can you get through to anyone?
I can't.
I can't either.
I have some information
about the murderer.
What does it say?
The news says,
"The most terrible Friday.
Who could have known that a normal, peaceful morning
would turn into the worst day in the history of the school?
It was on a nice, cool day
that the murderous female alumnus with a grudge
walked into the school, smiling like other students.
She grabbed a long knife out of a black bag,
stabbed it into the victim's throat,
twisted it before pulling it out,
and stabbed it right back in
-again, and again... -It's okay. Don't be scared.
-And again--" -That's enough.
Do you have a picture of her?
It's loading.
Look. Wi sent me a message.
She said the murderer is in building one.
What else did she say?
She said the murderer
is coming to building four.
-That's our building, Dad. -Quiet.
Are you making this up, Boong?
No. Look at it.
Hey.
My friend said she's coming to our floor.
Damn it.
Anyone whose phone works,
text the police to come and help us now.
It won't send.
Can you send a text?
-I can't send a text, too. -I can't send anything.
What should we do, Dad? I'm scared.
It's okay, Tang.
It's okay.
Keep quiet.
-Keep quiet, Tang. -Shut up, you crazy kid.
The murderer will hear us.
Shut up. Don't order my kid around.
Both of you, shut up.
-She's gone. -She's gone.
-We're safe now. -Are we safe now?
I don't know.
What are people saying?
The reception is gone.
Be quiet.
I can hear something.
Is she back?
Shut up, shithead.
Oh, my god!
Help us! Could you please open the door for us?
Help!
-Help me! -Hey! Wait!
Don't open it!
-What are you doing? -What the hell?
How can we tell
if she is a student
or the murderer tricking us into opening the door for her?
We don't know.
For our safety, I forbid you to open the door no matter what.
What if she's not the murderer, but a student?
Are you going to let her die out there?
How can we tell?
She might come in and kill us all.
What if she's not?
Will you let her die? What kind of teacher are you?
I don't know. I can't risk my daughter's life.
You only care about your daughter. How about others?
I will open the door!
I said no!
-I said no. -Kaew! Open the door now!
I won't let you!
What?
What is wrong with you?
Did you have to hurt her?
I don't care.
If I must protect my child as a father,
then I will protect my child.
Doesn't the girl out there have a father, too?
Shut up!
You guys can stop fighting.
She's dead.
-What? -What?
Shit.
You are a murderer!
How am I a murderer?
You killed her.
I helped you guys.
You helped us?
Think about it.
If we let that girl in,
the murderer would've come in, too.
She would've already killed all of you.
What I did
was sacrifice her
to save all of us.
Don't say a word!
You only thought about your daughter.
You didn't think about us at all.
I did.
Liar.
It's obvious that you only care about your daughter.
Just you wait.
Once I get out of here,
I will tell everyone that you're a teacher
who doesn't care about his students.
And then we will see
how much respect you'll get.
-Koh! -What?
Can you shut up?
If the murderer is still outside,
she could come back for us.
I think it's too late.
She's probably waiting right by the door.
It's all your fault, Suer.
Why didn't we run away from school?
Why did you run here?
If you are so smart,
why didn't you tell me where to go?
I'm grateful that we found others.
At least we won't die alone.
I will not die here with you.
Can you calm down?
Did you not hear the principal
saying that everything will be fine?
We don't even know if he is alive.
Isn't he dead already?
Koh.
You heard what I heard, didn't you?
He was talking,
then something happened.
This fucking teacher is useless.
He's an adult,
yet he only cares about himself.
How will a prayer help you?
Do you think God will come and lead you out of here?
Let me tell you,
as of now,
the only thing God can do
is take you and your daughter to heaven.
You little son of a bitch.
-Fuck you! -Bring it on.
Calm down!
-How could you do that? -Do you want to die? Fuck you!
You guys can fight if you want to die!
I will no longer stop you idiots!
Should we
find weapons to protect ourselves?
In case the murderer gets in here.
Yes.
What do we have?
This shit is so useless.
Shit.
Tang, do you want this?
Don't be ridiculous.
Sir.
Do you want this?
I saw on the news that a teacher stabbed some students with a pen.
I found scissors. Do you want them?
I found a box cutter.
Who wants it?
I'll take that.
Do you have no shame
taking it from a student?
I'm stronger and more mature than you.
So, I need something sharper
to protect everyone.
Protect us, like you did that girl out there?
Bullshit.
Suer, I found another box cutter.
How about you?
Anything else?
I found another metal pipe, Koh.
Take it.
Thanks.
Dad, I'm hungry.
Does anyone have something to eat?
Anyone?
I'm thirsty, too.
Does anyone have water?
Give her some water.
We don't have any.
Don't lie.
I know you have some.
Give the kid some water.
I said we don't have any.
I saw both of you just now.
Give the kid some water.
I said we don't have any.
Let me search you.
-Come here. -No.
I said we don't have any.
Wait a bit longer.
We will get some water when we get out.
Okay?
Koh.
Did you drink our water?
No, I didn't.
You said you don't have any.
It was my water.
I kept it for my girlfriend.
What do you mean?
You said you didn't have water.
Are you saying that you lied to the kid
to save water for your girlfriend?
What kind of a guy are you?
Is the prisoner gone?
I don't know.
I don't hear anything.
I don't either.
If she was still here,
no one would be alive right now.
Actually,
this might be our only chance to run
before she comes back.
You go ahead.
Go and find someone to help us.
I agree.
If you think this is our only chance,
then go.
Do you expect me to go alone?
I meant all of us could leave together so we could help each other.
We will die if we all leave.
Do you want me to go and die alone then?
To be honest,
you should go out first, Koh.
If it weren't for you,
Kaew, Mr. Tor and I would have left before all this happened.
But because of you,
we are stuck here.
What?
If you are going to blame me,
why don't you blame this fucking teacher for giving us detention?
I did my job.
You didn't do yours.
Great.
Blame everything on me.
Those latecomers should also blame me then.
I'm not blaming you, Koh.
How about this?
Let's take a vote
on who should go.
If you think Koh should go,
raise your hand.
Sa.
Why aren't you raising your hand?
He shouldn't go out there alone.
I feel bad for him.
This isn't the first time
that you have stuck up for him.
Is something going on?
No.
I just don't want him to get hurt.
Are you sure?
If it makes you feel better, I'll vote for Koh.
Fuck you.
How could you do that?
Everyone voted for you to leave.
-Go then. -Do you really think
that I will find help
if I get out?
If I get away, I won't give a shit about any of you.
Prepare to die in here.
That's true.
If all of you did that to me,
I wouldn't call for help either.
Let me ask you.
Who are you?
Why haven't we seen your face before?
I forgot.
Hello.
I'm Nanno.
Today is my first day here.
I'm a new student in grade 11, class four.
I'm a very unlucky new student, right?
On my first day of school,
a prisoner escapes from prison.
How about this, then?
If you feel bad for him,
go with him.
You can get people to rescue us.
I could go with him.
But I still haven't figured out
why I should get people to help you guys.
What about the kid?
Don't you feel bad for her?
How ironic
that the one who lied and refused to give the kid water
is asking me to have sympathy.
If we had to choose the one who is most likely to come back for us,
wouldn't it be Mr. Tor?
Because he would have to come back for his daughter.
If I go,
-I will take Tang with me. -Also...
you're a teacher.
You are responsible for your students.
Koh.
I'm not going.
Why not? You have a box cutter.
You have one, too.
Why don't we make Suer go?
That's a good idea.
Suer would have to come back for Sa.
I'm not going.
I'm staying with Sa.
Actually,
isn't Kaew in the student council?
So, she should help other students.
But all I have is a pair of compasses.
You can take my cutter.
That's enough. Stop changing the subject.
Everyone voted for you to go, so you must go. Go.
-That's right. -Yes.
-Go.
Listen to all of you.
Whatever.
You have to go and find someone to rescue us.
If you get help,
I'll make sure you pass this academic year.
Damn.
Is that how you want to play?
Yes.
Fine.
I'll go.
Fuck.
What the hell?
What?
The body is gone.
She came back to get the body.
Fuck.
We were arguing loudly.
She must know that we're in here.
We were arguing because you wouldn't leave.
Koh.
Listen to me.
Maybe it wasn't the murderer
who took away the body.
Officers may have come to investigate without knowing that we were in here.
How could they not know?
We were making so much noise.
I'm not going.
If you refuse, then what's your plan?
Will you just sit and wait here?
I will.
If it remains quiet for 15 minutes,
then I'll go.
Someone open the door for me.
Open the door.
You want me to leave, right?
-Koh! -Shit.
-Hey! -Kaew!
-What are you doing? -Open the door.
Koh, what the fuck are you doing? Let me back in right now.
Wasn't it you who said
that the body disappeared because officers were here?
If that is what you think, then you go.
I don't believe you.
You're also in the student council.
Your duty is to help others.
Don't make me do it for you.
Fuck you!
You should leave now
before the murderer comes back.
What's wrong?
Do you want to join her?
What a gentleman, pushing a girl outside.
You idiot!
I'm more of a gentleman
than this useless teacher.
Is someone calling you?
It's Kaew. She's video-calling me.
The reception is really bad.
Kaew.
What should we do? She can't hear us.
Boong.
-Boong. -Kaew. Can you hear me now?
It's...
It's really dark
and very quiet.
As if
nobody is in the school anymore.
Kaew, leave through the front gate
then call for help.
That's what I'm doing right now.
What's wrong, Kaew?
What?
Kaew, get out of there.
-What is it? -You should leave. Go.
It could be the murderer.
What if it's someone who can rescue me?
Kaew, listen to me. Leave now. Don't go in.
Kaew.
-It's dangerous. Just leave. -Fuck.
What the fuck is this?
It's dangerous. Just leave.
Kaew, just leave.
Run.
-Shit. -Kaew, why are you running away?
Why didn't you ask for help?
Fuck you, Koh. Shut your mouth!
I'm out here because of you.
Once you get out,
I will kill you.
-Kaew. -Hey!
-I will kill you. Mark my words. -Kaew.
-Hey! What is that? -Get out of that place!
No.
I got cut off.
I was cut off.
What should we do?
What?
You pushed Kaew.
You are responsible.
You guys forced me to go.
I didn't want to go.
But I agree.
If someone should go and find Kaew,
it should be Koh.
I agree with you.
But I think...
Fine.
I'll go.
Arguing with all of you is like arguing with dogs.
Tang.
How can we be sure
that he will actually help Kaew?
He could just take off.
I agree.
Koh is not like that.
He will definitely go and help Kaew.
You've tried to stick up for Koh
so many times now.
You can't forget him, can you?
It's not like that.
I just don't want people to misjudge him.
If you don't believe that Koh went to help Kaew,
try calling him.
He declined my call.
How's it going, Koh?
I came to look for Kaew but I can't find her.
See?
I told you that Koh isn't like that.
Since you're out there, why don't you go and see
if you can find someone to help us?
To be honest,
I don't want to help anyone.
Can you do it for me?
Can you help me?
Fine.
I'll do it right away.
I'll go now.
Someone will come and help us soon.
I need to pee.
You can't go out there. It's dangerous.
Do you want me to pee here?
Koh has gone to get help.
Just wait a bit longer.
I think you should wait here
in case the killer is nearby.
If she forces her way in here,
you and I can protect the others.
You are a strong man.
You can protect the others.
I'm going now.
Suer.
Can anyone else get through to anyone?
Sit down, Sa.
Why are you looking at me?
No reason.
Just say what you want to say.
If we get out of here,
there will probably be an investigation
about the girl who died outside the room.
I did it to protect all of you.
Everyone knows.
Everyone may know,
but Koh...
If Koh finds help for us,
he will be a hero.
People will be more likely
to listen to him
than to you
Suer,
Kaew,
Sa,
Duang,
or Boong.
What kind of father do you think Tang wants to have?
A father who kept everyone safe
but is known to be a murderer,
or a father who was a hero
because he saved everyone?
Tang.
Stay here.
I will go and get help.
Dad.
But, sir,
what if the killer comes?
You guys will find a way.
I know it.
But, Dad...
I have to go, Tang.
Sa,
close the door behind me.
Why did you have to say that to make him leave?
Don't you know how scary it is for us to be left alone?
How scary is it?
We are all girls.
If something happens...
Why are you smiling?
Do you remember
when she showed us the picture of the murderer?
She had the exact same haircut as Nanno.
That's right.
And she lured all the guys out--
It's you, isn't it?
You are the prisoner.
Is that what you guys think?
Why were you laughing?
You admitted that you are her by laughing.
How could I not laugh?
You guys think that I'm the murderer
even though I was with you
when the killing started.
And Boong,
didn't you say
that you saw the murderer?
It's true that I saw her but I didn't it see clearly.
It could have been you. Isn't that right?
Didn't someone get stabbed out there
when this lady was in the room with us?
Tang.
You have the intelligence of those three combined.
Why are you playing with the cutter?
No reason.
I just want to make sure
that it works
in case I need to use it.
Shit. Is that the killer?
Hey.
It's Koh's voice.
Should we go and help Koh?
You are too much.
Suer left a long time ago but you only care about Koh.
My boyfriend isn't screaming.
If it was Suer, I would go and help him, too.
-Let's go. -Wait.
Are you crazy? I'm not going.
You can go alone.
I want to find my dad as well.
I'll go with you then.
Boong.
Why would you want to go? Someone will come for us soon.
Do you still think that someone will come to help us?
As long as this kid is with us,
Mr. Tor will come back for her.
The kid just said she wants to find her dad.
Let's go. I'm worried about my dad.
If you want to stay, then stay. I'm leaving.
Can you not put pressure on me?
I don't want to stay with this new student.
Who said I was staying?
I'm going with you.
It's better to stick together.
At least someone will be the bait
when something happens,
so I can run to safety.
Tang.
Are you ready to be the bait?
What are you saying?
No one was thinking that.
Is that so?
I'm sorry.
Wait.
I'll go with you.
Keep quiet.
If anyone notices something odd, say something.
Okay.
What are you doing?
I want to take everyone to my dad.
Call Koh.
If he's with the murderer...
We will go and save him, right?
We will know where he is,
and stay away.
Why are you so horrible?
Sacrifices must be made
for us to survive in situations like this.
I'm thinking of a way to help you guys.
Right.
Boong is right.
Call Koh now. Hurry.
My phone is not working.
Mine's working.
Where is Koh? We will go the other way.
He's over there.
We will head this way.
Fuck!
Fuck.
What's wrong?
Fuck.
Sa didn't take us to safety.
She brought us to Koh.
-What? -That's not true.
What is not true?
I saw it. Let us look at it then.
-Let go! -My phone.
Let me see.
No.
You won't show us because you are taking us to Koh, aren't you?
You guys are selfish.
You only care about yourselves.
You will get us all killed.
You can go alone.
Sa, watch out!
-Kaew. -Kaew.
Sa.
-What happened? -Help.
Why?
It's Koh.
-What's wrong with Koh? -Koh!
Tang!
Are you all right?
What happened?
Call the police now.
What happened?
The prisoner killed Koh.
The prisoner is a monster.
Are you all right?
This evening, a serial killer who was convicted of killing eight students
broke out of prison
and carried out an attack at the school she had previously killed at.
The female prisoner hurt three students before a struggle,
and died after falling from a building while trying to escape.
Everything has been under police's control
since late evening.
Are you saying that the three students
who were injured are okay now?
They are fine.
This is what has happened so far.
-What? -We will keep everyone
-How is that possible? -updated...
Didn't a student die outside our room?
What?
Are you not dead?
I had an asthma attack.
I tend to faint
when I get very scared.
Oh, my...
If that is the case,
then who
killed Koh?
Suer
was overcome with jealousy.
Perhaps Mr. Tor didn't want Koh to tell people
what really happened.
Or it could have been Kaew who was angry with Koh
for pushing her out of the room.
To be honest,
if it weren't for Tang,
the three of you would have probably ganged up and killed me already.
What?
Forget it.
But we should think about
what to do with Koh's body.
I really don't get it.
Let's go, Tang.
Let's find Duang's phone.
I saw the phone fall into the drain.
We need your small hand to get it out.
Can you get it for me?
This phone is very important.
How is it important?
It's not even yours, is it?
That phone recorded everything that happened in the room.
It will be a very important piece of evidence
that will be used to investigate Koh's death
and the person who willingly let someone die like your father did.
So?
Can you get it?
No, I can't. It's too deep to reach.
Tang.
You're just like your father.
You should enroll at this school when you're older.
You will fit right in.
Subtitle translation by Pet-chompoo Sa-ngarmangkang