One day seohyun and lizzy was ride a bike and luhan was Behind them and seohyun bump into a small rock and fall down the hill luhan was shock he was think who should I save lizzy his girlfriend or seohyun his best friend seohyun bump into a rock and fainted and lizzy was whining for help so luhan help lizzy instead his best friend and suho saw that and save seohyun and take her to the hospital.

 The next day

 suho: why you help you girlfriend instead of your best friends 

 luhan: seohyun made lizzy and herself fall down the hill

 suho: do you know...... ( in suhos mind he think that he should keep a secret that seohyun lost her memory and have cancer)

luhan: you know what lizzy broke her arm

 suho: what ever

 taeyeon: LUHAN you brat do you know seohyun is in the hospital right now

 luhan: what she Deserve it

 taeyeon: you might never see her anymore and we are not your friend anymore

 luhan: ok 

 taeyeon: tell your little stupid girlfriend she have good luck

 luhan: yah you should call my girlfriend stupid you should call you friend stupid

 at the hospital 

 yoona: seohyun is awake 

 seohyun: who are you 

 hyoyeon: what you do know how I am

 seohyun: what you are yoona and you hyoyeon 

  Hyoyeon: then do you know who is luhan 

 seohyun: luhan I don't know 

 yoona: I fine you don't know to remember who he is

 then yoona call taeyeon

 yoona: seohyun is awake

 taeyeon: omg suho seohyun is awake right now and you luhan don you came near seohyun

 suho: stop came on we need to see her

 taeyeon: ok

 at the hospital 

 yoona: she remember everyone but she can't remember luhan

 taeyeon: ok that is good I don't want her to remember him

 hyoyeon: and the  Doctor said that she have cancer

 taeyeon: what cancer 

 yoona: she is fine now she can go home  tomorrow but can have any shock

 tomorrow 

 seohyun went to school

 taeyeon: are you ok

 seohyun: yeah what happen

 then luhan came over to seohyun

 luhan: seohyun come here

 seohyun: who are you 

 luhan: don't pretend come here

 seohyun: I don't want to and who are you

 taeyeon: luhan stop

 luhan: no I need to talk to her why lizzy fall down the hill

 seohyun: taeyeon who is lizzy and who is he

 taeyeon: he is no one and lizzy Is a brat so you don't need to know

 seohyun: ok

 taeyeon: go to class I will pick you up for lunch

 seohyun: ok

 at lunch

 they were finding a table and suho yelled

 suho: come here guys

 taeyeon: you want to go sit there

 seohyun: ok

 then they sit with exo and snsd 

 suho: are you ok now seohyun

 seohyun: yeah I'm ok why you guys look so worried about me I'm ok

 sehun then grab yoona

 sehun: what happen to seohyun

 yoona: will yestday seohyun and lizzy fall down the hill and luhan save lizzy instead of seohyun and now seohyun forgot who is luhan and lizzy and ......

 Sehun: and what

 yoona: you promise you don't tell anyone

 sehun: ok

 yoona: seohyun have cancer

 sehun: what I am going to kill that brat

 yoona: yeah that brat don't tell him about seohyun and since seohyun live with me I will take her to some where far away from luhan and luhan think that seohyun make lizzy fall down the hill

 sehun: ok take her somewhere I hope she won't remember luhan forever

 yoona: yeah

 seohyun: yoona unnie 

 yoona: yeah what happen

 seohyun: help me 

 yoona then saw luhan grab seohyun's arm

 yoona: yah luhan let of her

 luhan: no we need to talk why she make lizzy fall then the hill

 seohyun: what hill

 luhan: don't pretend that you don't know 

 seohyun: let go of me

 suho: luhan let go of her

 luhan: ok now you guys are at her side

 taeyeon: she didn't do not thing wrong

 luhan: she did 

 yoona: ok tomorrow you guys will never see her again 

 luhan: good I don't want her to be in my life

 Tomorrow

 yoona: come on seohyun we will be leave 

 seohyun: coming 

 yoona: ok now you need to say good bye 

 seohyun: unnie why we have to leave

 yoona: because some one blame on you if you didn't do anything wrong

 seohyun: ok unnie

 then they leave

 at school lunch 

 suho: why you think that is her fault

 luhan: because she make my girlfriend arm broke

 sehun: it was not her fault the bike bump in to a small rock

 luhan: you guys is in her  side that why

 sehun: no it was you fault and now she can't remember you because you give her to much pain and you take care you stupid girlfriend instead of your best friend do you know she have cancer

 suho: yah sehun

 sehun: what he need to know and now seohyun is leaving you might not see her in your life anymore

 exo: what seohyun have cancer

 luhan: I'm sorry 

 taeyeon: you sorry for what now you can't do anything 

luhan: I'm sorry for everything that I did

 taeyeon: now we need to see how she is doing and how long can she life is she didn't do the surgery next year

 next year 

 yoona: seohyun come on we need to go to the hospital to do you surgery if you want to live

 seohyun: coming how many percent that I will live

 yoona: the doctor say you will have 50% 

 seohyun: ok 

 yoona: when we finish we will go back of seoul 

 at the hospital

 after the surgery 

doctor: she if good now but you need to be carefull she remember everything now

 yoona: oh thank you doctor

 doctor: you can go see her now

 yoona: seohyun you are fine now

 seohyun: thank you so much unnie for taking care of me

 yoona: the doctor say you can go home tomorrow and we will go back to seoul

 tomorrow at seoul

 taeyeon: come on seohyun is coming 

 sehun: look seohyun is there

 taeyeon: seohyun 

 seohyun: unnie I'm back

 taeyeon: how are you now

 seohyun: I'm fine I just did my surgery yestday

 yoona: she is good now but she remember everything

 seohyun: ok unnie I want to meet the others 

 taeyeon: ok come on