In mid-July, Jinnan City was experiencing a heat wave.
An abandoned chemical factory in the south of the city suddenly discovered a male corpse with his throat cut. Forensic doctor Shen Qingci extracted trace amounts of blue morpho butterfly scale powder from the fingers of the deceased. The autopsy report showed that the real murderer was not a sharp knife, but an industrial-grade weapon.
Lu Chen, the leader of the serious crime team, took over the case. As the investigation deepened, clues were peeled off layer by layer:
From the strange fingerprints in the greenhouse of the Botanical Garden to the murderer Zhao Yuanzheng captured by Shen Qingci's father twenty-one years ago;
From Zhao Yuanzheng's crazy obsession with wallpaper butterflies, to the secret account behind it that makes payments on time every month.
When the clue finally pointed to the Yuanhang Group under the name of Lu Chen's father, the two were shocked to realize that they were standing on a huge lie.
The so-called smuggling case is just a cover. A new type of synthetic drug code-named "Blue Butterfly" has been quietly breeding as early as twenty-one years ago.
Lu Chen looked at the cold and aloof forensic doctor in front of him who was five years older than him. Thinking of the coldness of the other person during the blind date, he couldn't help but joke: "If a thirty-one-year-old man can't even go on a blind date, where can he expect to be?"
Shen Qingci pushed up his glasses, his eyes as sharp as a knife: "I can't solve the case well and I'm in a bad mood. Should I report the Army's work attitude to the inspector?"
They don't give in to each other on their lips, but behind the scenes they are committed to life and death.
When butterfly wings flap the storm, only standing side by side can pierce the long night.
The calm, cold and controlling detective captain Gong x the cold, aloof and extremely rational forensic doctor
At the age of five, powerful forces join forces for a suspenseful criminal investigation and two-way redemption.
Purpose: Justice may be late, but it will never be absent; truth is the only medicine to heal pain.