Jungkook receive an inventation from Yeri. She will be turning 19 years old soon. He handle the inventation to his mom.

Mrs. Jeon: Its her birthday. Did you already buy a gift for her? 
Jungkook: No. I don't know what to give to her.
Mrs. Jeon: *chuckled* Son, you should know the things that she wants. What if one day you'll court someone? you will look stupid if you do not know what girls want.
Jungkook: What should I give to her?
Taeyeon: Ring

The two of them look at Taeyeon.

Mrs. Jeon: Omo, my daughter is here.

They both hug each other.

Taeyeon: Mom.
Mrs. Jeon: Where is my grandson?
Taeyeon: He's with Heechul at home.
Mrs. Jeon: Your brother has a little problem here. He will go to his friend's party and he doesn't know what would he give to her.
Taeyeon: Her? So who is this girl?
Mrs. Jeon: Kim Yeri. Daughter of Kim Bok Shim and Kim Sung Jeon.
Taeyeon: Oh my god. So that would be an elegant party. Try to give her a ring.
Jungkook: Ring? Its like I'm gonna propose to her. Maybe that would she think.
Taeyeon: Don't worry its just a ring, a friendship ring.
Jungkook: Okay fine. I'll give her a ring.

He visited a lot of malls just to find a perfect ring for her like he is going to propose to her. Soon, a shining shimmering ring with a small diamond in the center captured his eyes.

Lady: Good evening Sir. Have you already choose a ring for your girlfriend?
Jungkook: Oh its not for my girlfriend ummm....can I look this ring?
Lady: It cost $4.5 million Sir.
Jungkook: Its beautiful.
Lady: Will you take it Sir?
Jungkook: Yes.

At Kim's mansion...........

Madame Kim: Why did you invite that boy?
Yeri: Because I want to. Is there any problem about that?
Madame Kim: You can't invite that boy.
Yeri: And why? *sighed* You know what I don't have time arguing with you. I'll have my beauty rest for this night and tomorrow is my special day. Good night mom.
Madame Kim: You really kid. Take a rest.

Madame Kim turn off the light as Yeri fell a sleep. The next day was a big day for Yeri. Yeri goes for a shopping.

Joy: Hey, why did you suddenly want to go for shopping? You should be staying in your house you know taking rest.
Yeri: They are all arranging the stuff for my birthday. I don't wanna be there because my mom would just talk and talk and talk and demand everything because she wants my party to be perfect.
Seulgi: I'm hungry I wanna eat. 
Joy: Hey, we just eat a while ago and later we have a party to attend and there are so many delicious and luxurious food there. Eat all you can.
Seulgi: Hey, I'm not a pig to eat everything in their.
Yeri: Guys stop it.
Seulgi: By the way Yeri Did you invited Jungkook to your party?
Yeri: Yes. And also I invited his friends.
Joy: Friends?
Yeri: Yes. They are Jimin and Suga. You will meet them soon.
Seulgi: We already know them. They really like flirting with the other girls.
Yeri: Guys, its better that if you will know them more okay? and its good if you will be friends with them.
Joy: Hah!