On a rainy night in Jianglin City, a series of murders swept the city with hallucinogenic poison. Criminal psychologist Ji Linchuan cuts open the iris flowers in the esophagus of a corpse and finds that every petal points to his dusty childhood murder case; criminal investigation captain Fu Shenzhou holds a gun to crush the conspiracy of the underground pharmaceutical factory, but hears his own uncontrollable heartbeat in the sound of bullet casings falling to the ground.
He is a profiled madman who wanders in the spiritual abyss, and his shirt collar is always stained with the smell of beeswax and tranquilizers; he is the police weapon that tears apart the hotbed of crime, and his ballistic trajectory is full of violent possessiveness. When the transnational drug trafficking chain overlaps with the "Angel Murder Case" twenty years ago, the confrontation in the poisonous fog turns into a life-and-death affair——
"Before you save this city, teach me how not to love you." Fu Chenzhou bit the antidote tablet between Ji Linchuan's lips, and the muzzle of the gun was burned into his heart.
And Ji Linchuan hid the blood-stained iris in the forged suicide note: "I have perfected my crime all my life, but my desire for you has grown so savagely that it cannot be seen in the light."
In the bloody game, they are each other's fatal loopholes and only antidote. When the truth was revealed, Fu Chenzhou broke through the handcuffs and held his trigger hand: "If the trial will eventually come, I will volunteer to be your last perfect crime."
Purpose: Criminal investigation