When absolutely rational forensic evidence is intertwined with the silent whispers from the dead, the most perfect lie in the world has nowhere to hide. Forensic doctor Lin Qingyun of the city bureau is calm and wise, holding a scalpel in hand to pursue the scientific code left by the corpse; criminal police captain Chen Zhen is courageous and tenacious, hunting down criminals and punishing evil in the real world; and the young ghost A Ming wanders in dimensions that the living cannot reach, snooping for hidden clues and emotions. These three "invisible partners" with different identities and complementary abilities form a unique light that illuminates the darkest corners of the city.