The "Shiguangli" repair shop at the end of the alley in the old city hides a secret that is more persistent than time. The young restorer Lin Yanzhi can read the past in the moth-eaten wood cracks and touch the emotions in the faded embroidery thread, but he can only solve the mystery of his grandfather's words before his death, "Some old things cannot be repaired." Until the arrival of a camphor wood box from the Republic of China, the moonlight seeping from the lotus pattern on the box lock, the torn sapphire embroidered cloth in the dark compartment, and the silver bracelet with the word "wan" engraved on the wrist of the mysterious client Shen Qingci, like a string of keys connected by time, suddenly opened up the dust-covered past - Gu Wanyi, a lady from a distinguished family in the Republic of China. The unsent love letters, the waning old man who returned from Southeast Asia, the recurring silver scissors... Every old object reveals a strange "life" during restoration, and Lin Yanzhi discovered that his family's restoration skills passed down from generation to generation never repair objects, but love and hate sealed by time. When the moonlight in the camphor box illuminated the truth from a hundred years ago, he and Shen Qingci had to face: Even if some memories are repaired, they are destined to bear indelible traces.