Serial murders occur frequently in Jiangzhou City, and the corpses all have strange smiles. The live broadcast platform pushes "death notices" late at night.
Seven years ago, Shen Jin's family was buried in a sea of fire. He was disfigured and survived. He returned from hibernation overseas and became the darknet codename "Crow".
Now he has sneaked into the police station as a psychological counselor, but he has been involved in the whirlpool of the Smile Murder Case. The truth points directly to the fire that year.
Unexpectedly, he gained the ability to solve live broadcast puzzles, analyze the details of the murder every night, and guide the entire network to piece together clues.
The live broadcast becomes the bait, the information is the trap, and the murderer's true identity is revealed step by step while watching.
While others are running for their lives, he is setting up a trap; while the whole city is watching, he is controlling the rhythm of death.
When the seven major villains appeared one after another - counselors, killers, drug lords, fanatics, school bullies, gangsters, and old friends - he started with a sneer: "The day I die, the whole city will be watching."
But it was never him who died.
