They are a very special pair of siblings who were fortunate to be loved by another pair of siblings. The elder brother was a mentor, a lover, and later became a brother-in-law and the father of his own child. Families were adopted separately, but met cleverly on the university campus. The younger sister who was adopted by a rich family fell in love with the elder brother who adopted her family. In order to make up for the elder sister who suffered from childhood, she sacrificed her love and went away. She experienced the transformation from an unmarried mother to a university professor. , she understands that life is long-term patience and persistence, and the same is true for love and family.