Senting, a modern criminal investigation police officer, was involved in a strange fog while investigating an unsolved case, and accidentally traveled to a different world with strict ethics and frequent murders. Here, he met An Jing, who also traveled through the fog and was proficient in forensic knowledge. The two became connected because of a bizarre murder case, and discovered that the murder case in another world surprisingly overlapped with the modern unsolved case. However, the real murderer seemed to have disappeared from the world, leaving only scattered clues. Shrouded in fog, people are unpredictable and clues are broken. Senting relies on modern criminal investigation thinking, and An Jing relies on professional forensic skills. The two work together to investigate, clear away the layers of fog, and crack the conspiracy across time and space. In the process of tracking down the missing real murderer, they gradually uncover the unknown secrets behind time travel.
