Yoo Jangmi. The anti-social student who's poor but studies at the school where only filthy rich kids can study. Jangmi's dirt poor parents sent her to the country's most expensive school, SMA or widely known as SM Academy. 

Students there would often talk about the latest celebrity news, brag about their new clothes or bags, or even show off the allowance they get every day. And those conversations Jangmi would hear were endless. She was literally fed up with those.

Rich kids don't worry about grades. Their futures are all planned out. They get to be heirs of their family's bussiness, marry another rich person, have kids, become even richer and BOOM! Future's set. Nothing to worry about so why study?

Not for her, no. 

Jangmi has her future prepared as well. 

And it was bad.

Her father bumped the limousine of South Korea's richest man. Of course he couldn't afford to pay the damage he has done to his car so the guy set a deal. The deal was to marry their first born children to each other and the payment would be off her father's shoulders at once. 

Of course he agreed, who wouldn't? 

It just so happens that the biggest jerk of the school and the most anti-social student is going to get married to each other. 

Quite a unique love story don't you think?