Forensic doctor Shen Ce suddenly encountered a strange vision while dissecting a drowned corpse. He traveled to Chang'an during the war in the Tianbao period. Coincidentally, the rebels were insurrection, and a strange "Rotten One" monster appeared in the city, turning the world into purgatory. At a critical moment, he awakened the "eye of traceability" that can see energy threads and traces of the past. He escaped from death with Xingyiquan, but was captured by the bad school captain Li Jiumiang as a spy.
In order to survive, Shen Ce used his forensic skills to investigate the bizarre murder case and discovered traces of the incense sect behind the scenes. It colluded with the rebels and used the power of the outer demon star "Yinghuo" to create mutations. There are also mysterious "keys" and "keyholes" secrets. Shen Ce formed an alliance with Li Jiuniang, and met Gongsun Qiao, a descendant of the Mo family. The three of them worked together to investigate and discovered that there was a more terrifying future predator force behind the Incense Sect.
Shen Ce's "Eye of Traceability" continues to evolve, from tracing the past to analyzing everything in real time. He holds the metal needle derived from Yinghuo and unlocks the "key" agreement. In the fight of blood and fire, he fights side by side with Li Jiuminiang and Gongsun Qiao against future predators. Step by step, he approaches the ultimate truth about Yinghuo's birth and the interweaving of time and space. He vows to overturn the chess game of the mastermind behind the scenes in this strange and chaotic world and protect the remaining hope.
