Seohyun is a naive and innocent girl, who over thinks things and is scared to disappoint her strict parents. Yongwha, her complete opposite, is just about as smart as brick. But he's got street credit and could care less about grades and parents. He, Popular? Most definitely. She, Secure? You bet.

When opposites collide, will it just cause haywire? Or will emotions Seohyun and Yongwha have never felt suddenly stir? Never have they thought the person their complete opposite could cause so much trouble. But, no one said they didn't like it.