Kim Jooyeon and Kim Myungsoo are polar opposites. Where Jooyeon lacks, Myungsoo succeeds. Where Myungsoo lacks, Jooyeon succeeds. They met Jooyeon's first year of high school and Myungsoo's third year. When the two are together, all they do is bicker. The one thing they have in common is the two both are good potential girl/boyfriends, but can't seem like the right person.

Jooyeon, in the most simple explanation, is a manly girly girl who can't find a man who can accept her.

Myungsoo is well rounded with looks, grades, and personality to prove it, but isn't trusted by the ladies.

Four years pass and they both are stuck single. They decide the best way to fix their problem, is to help each other.

"Yah, close your legs. It's ugly."

"Yah, cover your face. It's ugly."