Restorer Lin Wanqing inherited a century-old mansion left by her grandmother. As soon as she moved in, she received a series of unknown cowhide packages. The rose engraving on the copper pocket watch accidentally exposed her mother's lie that she had "eloped" and disappeared for twenty years.
The dark figure knocking on the window in the middle of the night, the study unlocked out of thin air, the old photos and reporting letters under the floor, the mystery is revealed layer by layer, the kind elders, the taciturn detective, everyone hides the past that cannot be told.
The obsessions of two generations, three dusty murder cases, and the whereabouts of huge amounts of stolen money are all locked in a rose-patterned copper box in the basement. She and Interpol Lu Ze risked their lives side by side to pursue old cases, but she didn't know that the hunting net in the dark had already quietly tightened around her.
