Taeyeon and Yoona are Kims siblings.There's a lot that they're going through on especially after the death of their parents. The presence of little angel became their life's encouragement. Their life begin to change when the older begins to fall in love and the younger want to regain her lost love.   

Lovestory between a boy who is full of himself, who takes everything as a play and a girl who is the most shyniest girl who can act properly in front of him than of many people. They don't have anything in common, just the fact that they hate each other.  Time flies and they had been throught many journes and realise that their life would be boreing if they aren't together.  What would make the two of them? Would they be together to the end?