On the eve of the opening of the Cenchuan Museum, restorer Gu Jiashu discovered a second keyhole on the lacquer box in the sealed display cabinet. The display cabinet has not been pried, and the cultural relics have not been lost. However, the collection files show that this lacquer box has been circulated under another name. Recovery consultant Lu Wenzhou brought a photo from an overseas auction thirteen years ago. The lacquer box in the photo was exactly the one in front of him. Starting from a double-lock lacquer box, the two gradually uncovered forty-three collections whose origins were mysterious, as well as a set of "double-lock principles" that had been hidden for decades. Gu Jiashu only believed in materials, and Lu Wenzhou only believed in witnesses. They want to retrieve the deleted source, and they also have to regain the trust that each other is willing to give up through joint verifications.
