Mo Xingxing, portrayed by Qiu Tian, faces a shattered family life following her mother’s death due to a heroic act. Subsequently, she must confront her father’s alcoholism, ostracization from her peers, and struggles with a mental disorder. Fortunately, with the companionship of “Little Sun” Mi Sha, played by Bao Shangen, and the warm-hearted senior Lu Li, portrayed by Huang Minghao, she experiences a period of beautiful and comfortable youth. However, the bitterness of adolescent worries, coupled with feelings of inferiority and sensitivity, pushes away love and protection. The gradually untangling threads of fate also hint at the dispersal of this youthful chapter. In the end, is it only the hourglass that remembers the time we have forgotten?