Gu Ci is the top "scavenger" in the underground world. His job is not to clean, but to clean up all the troublesome "trouble" and "traces". He is used to working with darkness and secrets. His hands may seem clean, but they have stirred up countless storms. When he decided to wash up his hands and use all his savings to buy an "old-time bookstore" that was on the verge of bankruptcy in a corner of the city, and wanted to be an ordinary person, a sudden "inheritance" completely disrupted his retirement plan.
A pretty little girl, carrying a letter, became the sweetest and most dangerous "trouble" in his life.
She is his daughter, Gu Niannian.
What shocked him even more was that this daughter he had never met had an innate talent - she could see the memories and emotions left on objects through touch.
A toy may contain clues to a crime.
An old book may contain a piece of forgotten history.
A watch may point to a shocking conspiracy.
From then on, Gu Ci's retirement life became no longer peaceful. In order to protect his daughter, the former ace scavenger had to regain his old skills. He combed his daughter's hair with the gentlest hands, and used the calmest mind to deal with the darkness from the past.
When the secrets brought to light one by one due to his daughter's talent involved the father and daughter in a deeper whirlpool, Gu Ci discovered that the disappearance of his daughter's mother, the woman he thought had died long ago, was far from that simple...
