The story is about two sisters Soon Young and Soon Ja. The elder healthy sister soon takes on family, whereas the weak younger sister only makes friend with Barbie doll. Every day taking after her younger sister, her disabled father and her uncle of money makes Soon Young tired. One day an American stranger suddenly appears, he offers to adopt Soon Young and took her to the US with him.because of jealousy, Soon Ja tries find way to replace her sister, but no one undoubted, behind her adoption contract is an unexpected story.