Lu Yinan originally lived in a happy home. When she was 15 years old, a major change occurred in her family. She had no choice but to go to live with her half-sister. By chance, I met Liang Musheng, a boy who liked to be taciturn and cold. After going through all kinds of things, the two finally came together and made a promise to never be separated. However, fate plays tricks on people, and when an unbearable truth is placed in front of the two of them, can this unforgettable love continue?