In a modern city, bizarre cases frequently occur: the murderer's tactics are meticulous and seem to hide a deeper planning intention. The private investigation team led by Qin Huaizhou came together because of their respective pasts and solved the serial mystery through cooperation in various professional fields. During the investigation, they gradually discovered that all the clues seemed to point to a forgotten old case and the dark forces behind it. Trust and conflict coexist among the team members, and personal fate and team fate are intertwined, promoting the gradual convergence of multiple stories, gradually uncovering the fog of the city and human nature.
