Haneul, an orphan girl, who is too grown up to live in the orphanage and has to leave soon. Then, one day, a contest spread worldwide. Little does she know, she won the contest in having a one day date with Do Kyungsoo, a famous idol singer and actor in whole of South Korea. And that's not the only thing she wins. Something unexpected will come her way between her and Kyungsoo.

Main Characters:

Haneul (OC)

A poor girl who became an orphan since she was 5 years old and the only girl who was not adopted. Being soon to be 20, she needs to leave the orphanage soon. But her life changes when she won a contest in having a one day date with Kyungsoo and win something unexpected.

Kyungsoo

A handsome, famous idol-actor whom every girl swoon for. But he has no interest in girls. Despite enjoying his life of a bachelor, his mother feels worried and wants him to go out and meet a girl of his own and get married. 

Seungsoo

Kyungsoo's older brother. Unlike Kyungsoo, he cares for Haneul and supports her whenever she's in trouble.

Supporting characters:

Jiyeon (OC)

Haneul's caretaker in the orphanage. She treats Haneul as her own daughter and loves her more than anyone else. 

Chanyeol

Kyungsoo's best friend who likes to produce his own music.

Kai

Kyungsoo's best friend and a dance instructor. He prefers to be called Kai rather than his real name. He has a crush on Rina. 

Rina (OC)

A Japanese-Korean girl who has a crush on Kyungsoo. She dislikes Haneul at first, but then, after she found out she's married to Kyungsoo, she gives up on her love for him and became friends with her.

Soojin (OC)

Haneul's childhood friend from the orphanage.

(The four contestants that won the contest with Haneul):

Anna

A German girl who is obssessive with Kyungsoo's work and is quite greedy when it comes to food. Whenever she watches Kyungsoo's drama or movies, she would eat in front of the TV. 

Erica

A tomboyish sportsgirl and technology expert from New York, USA, who enjoys all kinds of sports and loves computers. She's the only contestant that doesn't enjoy Kyungsoo's music a lot.

Macey

A rich, spoiled girl from London who always gets everything she wants. 

Kelly

A proud girl from Beverly Hills, USA, who always boast about her championship in singing and beauty pageants and her mother who is a famous singer.