Love Triangle 

Dara and Tiffany are the best of friend despite their opposite personalities.

Dara is the energetic, cheerful and high-spirited woman, while Tiffany is a shy, introvert geek who loves to read books.

Dara is a model of a popular cosmetic brand in Korea, while Tiffany is just a librarian.

Dara speaks what’s inside her mind freely, while Tiffany lacks confidence.
Dara lives a blissful life of a daughter from a nice family with loving parents, while Tiffany comes from a broken-family and she lives only with her sick mother in a small rented cheap apartment.

As it is stated before, the two of them are just too different. They’re like the sun and the moon. One doesn’t have the shine of herself, and another one helps people around her to shine like herself too.
The two of them are different, yet the friendship is so strong. They have been friends since God knows when. It has been forever. But then, what would happen if they secretly love the same guy? What would happen if one of them admits to the other one that he loves that guy?

That guy. His name is Lee Donghae. He is a photographer of Dara who loves to go to the library where Tiffany works.
What would happen.. when Donghae confesses his feeling to one of the girls?