Yoona and Donghae hated each other more than anything.  Yoona was a goody two shoes for him and aggravated him whenever he saw her. Donghae had a bad boy personality that Yoona couldn't dare go near. They graduated college, hoping that they wouldn't see each other afterwards. One day, both their parents plan to have a arranged marriage. They didn't know who the other person would be their fiancee. Once they Knew, They couldn't say no because of their parents. But is Yoona and Donghe going to go with the arranged marriage?  How would their married life be? Will they fall in Love? With each other? Or somebody else? Everything becomes unclear as they try to figure out their own feelings.

The cast features:

Im Yoona- The funny, shy girl who can't figure out her feelings. She's strong enough to break any barriers, but when it comes to love... she can't help but feel slightly overwhelmed.

Lee Donghae- The bad boy with a broken heart. He vowed never to love again after his ex-girlfriend broke up with him. He couldn't see himself with another girl. He meets Yoona, who is different to what he sees,

Nichkhun- He's the kind guy who tries his best to make Yoona happy. But when her heart is broken and shattered, does he take advantage? When she's fallen in love, he feels differently about her. He has the decision to make or break her happiness...or will he just satisfy his needs?

Jessica- She's the announcer girl, the pretty one that every likes and admires. She's the one with a broken past and she's willing to fix it... only if she can get the love of her life back in her arms. Can she? Or will her plans fall through the cracks as she finds him falling in love with someone else?