Gao Fei, a private detective with a complicated life experience, leads his "disabled" apprentice Chen Feng to explore the truth of different cases amidst numerous doubts. The mysterious disappearance of a female college student, the truth about the will of a 70-year-old man, the blood and tears at the emergency nursing station, and the ten-year tragedy in a rural funeral home. These seemingly unrelated cases point to one target. Gao Fei and others searched tirelessly, but finally found that the answer to the mystery disappeared in front of everyone... Who is the real murderer, and can the missing answer be resurfaced?
Concept: The complexity and distortion of human nature are intertwined to form contradictory light and darkness, but the truth will always come out.