Transmigration and Rebirth: Qi Yue, a modern forensic pathology PhD, is electrocuted to death in a lab. His soul transmigrates into the body of Qi Erlang, a private school servant who drowned during the Zhenguan era of the Tang dynasty. He wakes up in the county yamen's morgue and realizes he's at a murder scene.
System Activation: An ancient autopsy System activates alongside his transmigration, providing professional knowledge and skills to help Qi Yue determine that the victim did not simply drown, but was murdered and then dumped in the water.
Initial Autopsy: Given a three-day deadline to solve the case by the county magistrate, and an old coroner's conclusion that a "water ghost claimed the victim," Qi Yue uses modern forensic knowledge to examine the body again. He uncovers crucial evidence: a cargo tag from the Grain Transport Gang tucked inside the victim's belt.
Flashback: When he touches the corpse, Qi Yue suddenly flashes back to fragments of memories from his modern laboratory. At the same time, he sees a strange image of "abnormal pollen on a bride's corpse," hinting at case information hidden within the System that has yet to be unlocked.
The Magistrate's Daughter: Eighteen-year-old Lin Xia, the county magistrate's daughter, barges into the morgue. She becomes fascinated by this "servant" who can see through a murder case, setting the stage for the two of them to team up on future investigations.
