Yu Yue, a female high school student whose parents died, and her adopted sister escaped from the clutches of her stepfather and have been self-reliant since childhood. Yu Yue was devastated by her mother's accidental death. The sudden disappearance of her childhood sweetheart, Xing Yijue, was a huge blow to her young and fragile heart. As time goes by, the mystery of his life gradually emerges. The dancing girl in the bar sang loudly, the daughter after her father remarried... They had gone through the good times of youth, and their temporarily stable dream was shattered. What cruelty awaits them.