Su Yanci, an antique restorer in the market, guards the "Qing Yanzhai" to secretly investigate the old case of the mysterious death of his adoptive parents, with only half a piece of jade left as a clue; Mo Chenyuan, the president of the Mo Group, is looking for the family's missing heirloom jade seal and the boy in his childhood memories.
An appointment to repair porcelain reunites the two. Su Yanci recognizes the jade residue in Mo Chenyuan's finger, and Mo Chenyuan recognizes the wooden sign with the word "yan" carved by Su Yanci. After that, they teamed up to solve the villain's conspiracy and investigate the truth of the old case. In the end, the jade seal was returned and the injustice was cleared. On a snowy night in the alley, a jade ring locked the two of them together from childhood to the rest of their lives.
