Xu Anping, a photo studio owner, is secretly a grassroots family search volunteer. When he was young, he accidentally lost his younger sister, Xu Xiaohe, and has carried guilt in his heart ever since. Using his skills in repairing old photographs and coordinating with volunteer teams while adhering to proper procedures, he helps scattered families search for their relatives. In the process of handling multiple family search cases, Xu Anping confronts his own sealed past, follows the clues for verification, and finally meets Lin Xiaohe, who is suspected to be his sister. This drama does not pursue a forced happy ending; respecting the wishes of those involved, it tells a heartwarming story of ordinary people using kindness and persistence to help others find their way back home, while also completing their own self-reconciliation.