The city's undercurrent is surging, and secret murders have surfaced one after another.
Criminal geniuses are good at exploiting human weaknesses, creating nearly perfect crime scenes, weaving a huge chess game through cases, and playing with the city's police.
Criminal investigation geniuses have extraordinary powers of observation and logical thinking, and can see into the murderer's psychology through subtle traces.
A mysterious case of falling from a building became the beginning of the game between the two. The murderer laid foreshadowing and set up misleading clues in advance; the pursuer dismantled the trap and set up a trap in reverse to lure the opponent to show up.
There is no impulsive fighting, only a calm and careful mental duel. You predict my thinking, and I will deduce your prediction.
As old cases were uncovered one after another, they were shocked to realize that many years ago, fate had already entangled the two of them into the same huge dark situation.
Who is the chess player and who is the chess piece? By the time the truth emerges, good and evil have long been blurred.