Kwon Yuri is your average 24 year-old woman. 

She is editor in chief of top notch fashion magazine and at her age, she's majorly successfully.

Add her ridiculuously good looks and snarky personality...

Player Kwon is on the prowl.

She spends many nights drinking at clubs and flirting with many women, all for her business of course.

Never has been interested in dating, but she longs to find someone to love...

One day she comes upon a little girl of only 3 and half years old.

The little girl claims that Yuri is her mother and crashes into Yuri's life.

Where has this girl come from?

Who is she?

Those are the questions Yuri is determined to figure out.

On the other hand there is the 23 year old Im Yoona.

She is a simple daycare teacher who loves to work with kids.

With her choding attitude and her loving nature, she is a teacher admired by all her kids.

However although she manages well in her work setting, she struggles in her love life.

She's in a relationship now, but not a happy one.

But Yoona doesn't have the heart to break anyone's heart even if hers is breaking.

Will she be able to find someone she is willing to fight for?

Can she find happiness in love?

Then there is Tiffany Hwang.

Yoona's adopted older sister who is 24.

She has been America since she was 20 and now Tiffany  feels like it's time to come back to Korea.

Yoona has noticed that there has been a lot of changes in Tiffany. 

The older girl is much sadder and calmer now.

When asked, Tiffany grits her teeth and gives her younger sister a bitter smile.

There are many questions that Yoona has for her sister.

And the only person that can answer them is Jessica Jung.

The only person that can answer Yoona's and Yuri's questions is Jessica Jung.

How do these four people come together?

What do they learn?