Driving to where Taeyeon is, feels so different despiite doing that for a long time already. With the way Mr.Lee describes Taeyeon's current, they immediately knew is terrible is hapening to her.
The girl are being careful about what they think is happening because Tiffany is not in good shape and inflicting more worries to her is not their list.
Arriving at the playground they saw Mr.Lee waiting for them. Tiffany who haven't been there for a long time is stunned by what is happening
"This is where she always go?" Tiffany ask no one.
She was left alone couldn't find her strength to walk upon realising what is unfolding in front of her.
The girls went back to where she is standing and saw the confusion in her face.
"Fany, she went somewhere we don't know and Mr.Lee didn't know either where she go" Yuri explain to her as their worry for the safety of her friend grow.
"Does she always go here?" She ask
"Yes. Why?" Sunny replied.
They saw how Tiffany's tears fell out of her eyes. It was like she remember something painful
"This is where I live before. This where we always go. This where I promised her to wait. This is where I told her I will meet her 5 years agao" a tearful Tiffany say.
Now it is clear to them why Taeyeon is always there waiting for someone they don't know. Gasps can be heard from all of her friends.
"So it was you that she's been waiting here all along. Why didn't we think of that before?" Sooyoung blurted 
Tiffany walk away from her friends and went to where they always sit. The swing and the slide. 
Memories came flashing in her mind. Those time they are just watchhing the stars and feeling the cold breeze.
Those times that they will just play like a kid. Running like a kids.
But the goodbye scene kept playing on her mind. The goodbye kiss that will forever be in her memory.
"Unnie, are you okay?" Yoona approach her she started sobbing. Kneeling on the ground.
The girls also started to circle around her, concern about what is happening to her.
"Fany, let's go home. You need to rest. You're tired" Sooyoung kneel in front of her trying to help her up.
"No, I know where Taeyeon is" Tiffany say as she stood up and walk across the street going to her old apartment.
Tiffany is sure if Taeyeon has been lingering at the playground it means she's been staying at her apartment all along.
The girls has no idea where she's going but nonetheless they followed her. 
They arrived at apartment building. A very familiar place.
"Wait. Don't tell me all this time she's been living at your old apartment" Hyoyeon says as the felt goosebumps all over their body.
It was unexcted. They never thought that Taeyeon will kept her apartment. Now they know why she's not telling them where she lives because if ther friends would know about it, they will force her to move to another apartment.
Tiffany stops at apartment #27. The place where most of her memories with Taeyeon stores.
"Fany, do you still have your keys?" Sunny ask.
Just when Tiffany is looking at her bag for the keys, they heard a scream and glass being shattered inside.
"Fuck Taeyeon!" They started banging on the door afraid that she will hurt herself.
Tiffany is shaking while looking at her keys. She hand it over to Sunny.
The moment the door open, memories of the last time she's been there roll on her memory like a movie.
The apartment is still the same like how she left it before. The furniture is still where she place it. The interior is still what she design.
At the living, they saw Taeyeon kicking boxes of gifts. The living is filled with pink boxes. Different sizes. 
They are all puzzled why Taeyeon have those. 
Sunny is the first one to approach Taeyeon "Taeng, stop"
Taeyeon push her away and continue assaulting the boxes. Tearing it. Kicking it. Throwing it.
"Get out! I don't want to see anyone of you. Get out!" Taeyeon shouted at them.
"Taetae" Tiffany started walking to her "Please stop. Let's talk. Please". Tiffany cries as she walks closer to Taeyeon who's been crying too.
"No! I don't want to talk to you. I don't wanna see you again. Stop pretending you care about me. You don't love me that's why you're going to leave me again. Just go! " Taeyeon shouts at the top of her lungs.
The girls could no longer take it as they cry along. Seeing Taeyeon breakdown like that is much worst than what they saw before.
"Tae, please you have to listen to me" Tiffany beg.
As the two continue fight against themselves,Yuri went on to pick up one of the box being thrown by Taeyeon.
The shock on their faces upon realising what those boxes\gifts are for. They all look at each other as they felt bad for the two.
Those gift on the floor is Taeyeon's monthsary gifts for Tiffany. The card indicated how many months. 
Taeyeon didn't stop celebrating. She's been waiting for Tiffany alone at the playground waiting for the other girl to come home. She's been holding on to that promise they made.
"Taeyeon, you have to listen to Tiffany. Don't push her away. We all know how much you love her. Those boxes. Those gifts. It was for Tiffany right? Why don't you give it to her. Taeyeon you waited 5 years. 5 freaking years. Please don't throw all your efforts away because of a misunderstanding" Yuri tries to convince Taeyeon. She doesn't want them to end just like that. The journey of them to be together is no joke.
Tiffany checks the boxes on the floor, it was really Taeyeon's gift for their monthsary. The number of gifts means the number of months that they are away from each other.
"Boo, please I'm begging you. Talk to me please" there is nothing Tiffany can do but to beg her. She has to explain everything before it's too late.
Taeyeon's frustration, heartbreak and loneliness is eating her up that she can't seem to stop herself. She keeps on kicking the boxes, destroying everything that her hand touches.
She even kicked the mental frame of the side table many times.
"Taeyeon stop. Your knee! Don't hurt yourself. You've been hurting for so long" Sunny decided to interfere and hug Taeyeon from behind.
It seems effective as Taeyeon slump on the ground and cries in the arm of Sunny
"Sunny, I don't want to live anymore. I want to die. Please kill me. I can't take it anymore" Taeyeon says as tears continue to fall for her eyes.
Those who are inside the apartment is sobbing so hard that they couldn't think that they will hear those from Taeyeon. The one who is known to be the strongest among them.
"Don't talk like that. You still have us. We will not leave you. Tiffany is here to help. Taeng, you have to let Tiffany in. She's the only one who could help you"
"I don't want to hurt her anymore. I don't wanna hurt her anymore. It's me who is the problem here. I am not okay. I want to die. I miss my family. Sunny I wanna see them again" Taeyeon continue to sob
Sunny hug her tight as her tears falls. She doesn't want to cry, but seeing her friend surrendering herself from the pain she's keeping to herself is very heartbreaking to the point that you are speachless.
Tiffany kneel infront of her and hold her hand "Let me help you,Tae. I want to help you. Just tell me what should I do to help you. Tae, please don't let your fear and pain tells you to give up your life. I don't wanna lose. I can't live without you. Please"
"I miss my family so much, Fany-ah. I want to be with them" 
"Then we will go to your house. I will drive you to Jeonju" 
"You don't understand. They are gone Fany-ah. They are dead. Mom,dad,hayeon, jiwong oppa. They are dead because of me. You said you will do everything for me, please kill me now. I want to be with them"
It was like a horror movie in front of Tiffany. She slowly loses her hold on Taeyeon' hand. Now she can understand where her pain is coming from. Losing a family is the worst that anyone could have ever experience.
"What happened to them? Why did you have to hide it from me?"
The secret will finally be reveal to Tiffany.
"December 23, 2017. I flew all the way to LA. You've been gone for so long and I don't know what happened to you. Mom and dad allowed me to go because they saw how devastated I am since you've been gone" Taeyeon pauses as the memories came back to her
"December 24, as soon as I land, I went to your house. I waited outside. I knocked on your door but no one is answering. I know someone is inside your house that day"
Tiffany tried to recall her first christmas eve back at her hometown. She then remember her dad came in to her room so mad telling her not to go out of her room and even look outside the window. 
Tired of having a constant fight with her dad, she did what he told her to do and just sleep for the rest of the day.
"You're dad came out of your house threatening me if I continue to appear in front of your house he will tale everything away from me. I begged him. I even kneeled in front of him but he just push me to the ground" Taeyeon started to cry again. She did everything that she can at that time. She even lower her pride just for Tiffany.
"I haven't even checked in to my hotel when Dad called me asking me to catch a plane back to korea the same day I landed" Taeyeon could still hear her dad's voice that day. The voice of her dad crying over the phone because of her. 
"You know why he ask me that?" Taeyeon ask Tiffany who just shake her head. The girls are getting anxious because what Taeyeon is about to say will totally turn Tiffany's life upside down.
"Dad is crying over the phone on Christmas eve not because I will not be celebrating with them but because your dad took everything away from our family. He ask our business partners to pull out all their shares in Kim Corporation. The company that my grandfather built was gone because of me" 
"Tae stop" Tiffany's soft voice can no longer be heard as the apartment is filled with sobbing. 
" I arrived back in Korea on Christmas Day. December 25. My family pick me up from the airport. I will never forget the look on their eyes. I know the all blame me for what happened. I know it but they won't tell me" Taeyeon's tears are like a falls that doesn't stop to flow. The worst day in her life, she has to relive the horrific scene again. 
"Just few kilometers away from the airport. A multiple car accident happens. And with just a blink of an eye, our car came flying and tossing and tossing around. On christmas day my whole family is gone. If I didn't insist of following you there none of this would have happen. If I just waited for you, I will still have them by my side" Taeyeon started to hit head again. She doesn't want to remember that again but it keeps on playing in her mind over and over again. The guilt is still there and she still don't know how forgive herself from what happen to her family. 
"Tae"
"I didn't tell you about this because I don't want you to hate your dad. I know how hard it was not to have your family. I know how much you love him" Finally her reason came out. She's been protecting Tiffany from the pain that her dad causes Taeyeon. 
Tiffany couldn't find the strength anymore. She feels like the last bit of love and respect she has for her dad suddenly disappear. 
The urge of seeing him again so strong. She wanted to ask why he did that to the Kim Family. The family that took care of her and the family who showered her with love. 
"Fany-ah, it's me who is causing you pain. It's me causing the pain to myself. I don't wanna hurt you anymore. I can't fully commit myself to you until I can't fix myself. I am broken Fany-ah. You deserve to be happy"
"No, Taeyeon. Don't you dare. I don't care weather you're broken or not. I don't care!!!!" Tiffany is panicking she knows what Taeyeon is telling her.
"Fany-ah, listen to me. You've been through a lot because of me. You sacrificed your life, family and career for me. But I am not worthy of everything. I love you so much but I have to let you go. I need to set you free"
The girls are out of words. The falls of Taeyeon is not what they expected. 
"Taeyeon, no. Don't do this please. Just tell me what should I do to fix this. Please don't give up on us. It is that I have. You're all that I have now Taeyeon. I can't live without you. I love you so much that I don't know what I will without you" Tiffany is beginning to be hysterical seeing Taeyeon has no intention on fighting for them. 
"You have to a lot of reason to be happy. And staying with me won't bring you any good. I have to fix myself. I have to find my own will. I need to find my way back to who I am before all of this happens. Tiffany, let's break up" there finally those words that she didn't knew will come out of her mouth. 
Tiffany is devastated, heartbroken,mad, different emotions. This is not what she wants. That is not what she thought will happen as she return to Korea. 
Her life suddenly stops. Taeyeon is her life. Her everything.
Suddenly all she can she is black. She went somewhere dark that she just want to stay there forever. But Seohyun's voice bring her back to reality.
"Unnie, we will bring you home now. You two needs to think this again" 
She didn't respond. She just let them lift her up. She feels weak. 
Before someone of them leave, Taeyeon cries for help
"Guys, I can't feel my right leg. I can't move my right leg!" Taeyeon shouts. 
"Hyo, call your Aunt now!" Sunny instructed as they help Taeyeon to the couch. "Taeng, relax. Don't worry. Hyoyeon is already calling Dr.Kim. You'll be fine"
While the girls are panicking, Tiffany suddenly speaks "What happened to her leg?"
Without second thought Sunny answer "During the accident, Taeyeon is badly hurt. Her right leg to be specific. Doctors has to put mental plate on her knees. She's been in a coma for 6 months"
The informations is too much for Tiffany. First her dad destroyed Kim Corporation. Second her second Taeyeon's family died. Third the break up and now knowing that Taeyeon almost die too. 
"Hey, Dr.Kim told me to bring Taeyeon to the hospital now. They will check if the mental brace is still intacked"
They rushed her to the hospital where Dr.Kim is waiting for them. Her team is already waiting outside of the emergency room. 
All that they could do is pray that nothing will happen to Taeyeon.