Lin Zhixia, a modern forensic doctor who was extremely talented but suffered from severe social disorder due to childhood trauma, was on the verge of death in a bizarre explosion. Her consciousness accidentally traveled a hundred years and was deeply linked to the soul of Yin Zhaoxi, a talented female forensic doctor who was exterminated a hundred years ago and died in hatred. She woke up in modern times with Yin Soxi's resentment, unfinished will, and fragments of forensic knowledge that transcended the times (limited by the technology of the times and could not be fully used).
Lin Zhixia found that not only could she "hear" the silent whispers of the corpse (the embodiment of Yin Soxi's residual thoughts), but she was also shocked to discover that a series of serial murders that took place in Hanjiang City a hundred years later with bizarre techniques and imitated old cases during the Japanese occupation may have had a secret connection across time and space with the mastermind behind the destruction of Yin Soxi's family. A large criminal organization "The Shadow Society" rooted in the shadows of history gradually surfaced.
In order to seek the truth about his own time travel, complete Yoon So-hee's revenge, and prevent a modern tragedy, Lin Zhixia must overcome his inner demons. With the help and exploration of Han Taiyu, the cold-tongued but sharp and upright detective captain, and Kang Jaehyuk, the forensic supporter of the chaebol heir whose identity is unknown, he uses his dual forensic wisdom to peel off the cocoon and race against time to track down the ghost murderer who wanders in the gaps in time in the fog that spans hundreds of years, revealing a shocking conspiracy that lasts for a century.
