Huang Suyue didn't know that she had a twin sister until she was ten years old. Being sent to her real home, she was at a loss as to what to do. On the surface, this sister is lively and innocent, but in her opinion, she is just pretending to prevent this sudden sister from taking away her father's love and mother's love. In fact, parents do prefer their younger sisters, but they are strangers and unable to get close to their older sisters. In high school, they both fell in love with a boy at the same time. The elder sister and the younger sister started an endless battle again...