**When the truth is deliberately buried, only the obsessed can uncover the lies beneath the bloodshed.**
While examining a body in an abandoned factory on a rainy night, forensic doctor Qi Yan discovers a dark red triangle carved into the inside of the victim's wrist, identical to one found in several unsolved cases she has handled. She secretly keeps crucial evidence, unaware that she has already become the target.
Cheng Jin, head of the homicide squad, is cold and rigid, and despises anyone who oversteps their bounds. When he discovers that all the victims are connected to an unsolved case from ten years ago, and that Qi Yan's father was the forensic doctor in charge of that case, the one who supposedly "killed himself," he has no choice but to work with the stubborn woman.
**One mark links a decade of unsolved mysteries.
One conspiracy exposes a dark network of power and profit.**
When the investigation points to the Blue Sea Club, a gathering place for political and business elites, Qi Yan and Cheng Jin gradually uncover an organ-trafficking network far larger than they imagined. And the deaths of both their fathers turn out to be connected to this organization...
**On the path to the truth, the most dangerous people are never the killers, but those who will do anything to cover it up.**
**"What you think is coincidence is always the inevitable result of careful design."**
