Have you ever heard about a saying sounded like "An act of true love can thaw a frozen heart." ?

Well, Song Ji Hyo is a cold yet strong-minded girl. She never really believes anything about love. Love doesn't exist in her world nor her life. Her heart has been frozen for too long that she learnt not to trust anyone in her life. For her, life is just as cold and as dark as winter night. What you need to do is just trying your best to survive in the pile of snow, fighting the cold and wind in the night. 

But,

That heart seems to melt a little by a little when she met a friendly yet charming guy named Kim Jong Kook who's always seems to be cheerful and happy all the time.

Their personalities are somehow the opposite of each other. 

He tried his best to smile no matter what happened while she even forgot when was the last time she smiled. 

He tried his best to make friends with everyone if possible while she doesn't even trust any single person in her life. 

Will Jongkook be able to melt the ice which froze her heart and stole it?