In a family that favored sons over daughters, she was originally the only child and the beloved little princess of the family. Because her parents insisted on a boy to carry on the family line, she successfully gave birth to a boy after giving birth to three daughters. From then on, she changed from the family's favorite to the family's leftover. This huge change caused her to suffer from mental illness. She desperately wanted to escape from this home. When she grew up, she finally escaped from this home with full wings. Later, she met her childhood sweetheart. Unfortunately, the girl was already with someone else. After the girl broke up, she found that her childhood sweetheart was still with the girl. This time, the girl finally fell in love with her childhood sweetheart.