The Abnormal Case Investigation Section of the Municipal Criminal Investigation Detachment specializes in investigating deaths that go against common sense.
A programmer suffered a cardiac arrest after giving crazy likes, a flower shop owner froze to death in the warm wind, and an anchor had his throat cut by an invisible blade in front of millions of viewers...
There was no murder weapon, no witnesses, and no motive at the scene, only a mysterious number was left.
As the investigation deepens, all clues point to an "accident" in the 703 Laboratory of the Old No. 7 Middle School ten years ago.
This is not a serial murder, it is a trial ten years late.
