[The light of reason illuminates the sins hidden in the dust; the shadow of the dark night reveals the hypocrisy of human nature.
Su Wan, the chief restorer of the Municipal Archives, is meticulous in logic, has a photographic memory, and firmly believes that the truth is hidden in history. Lu Qingying, an underground intelligence agent who goes by the pseudonym "Shadow", has excellent intuition, wanders in the dark, and discerns lies under the sun.
A mysterious case of "drowning in a dream" suddenly brought the two people's worlds together. An old file from a mental hospital and a mysterious message left seven years ago - "They are all asleep, but the shadow is still awake", have become the key to uncovering countless mysteries.
"Non-Existent Patient", "Inverted Sacrifice", "Time Thief"... A series of unsolved cases caused by the shadow of the past forced them to form the most unlikely partner. Su Wan combed through the pile of old papers, while Lu Qingying searched for the truth in the gray area. From the mutually exclusive confrontation between officials and gangsters to the tacit symbiosis of life and death, they pull together in the game and get closer in the protection.
At the same time, a huge organization called "Minos" gradually surfaced, and they discovered that their past and present were closely related to this shadow that pursued "absolute order."
This is the intellectual game and soul resonance between two top women. They stood with their backs facing each other, the blades facing outward, coexisting in the fog, becoming each other's only light, and together tearing apart the giant web woven by lies and sin.
