Five years ago, there was a shocking catastrophe, poisonous gas filled the air, memories were destroyed, loved ones were separated, and life and death were uncertain.
She is Bai Jinxi, a carefree policewoman from the city police station who is good at criminal psychology. She is smart and public, but she is always entangled in a broken dream. There is a vague figure in the dream and an unfinished oath, which has become a knot in her heart that she cannot untie. No one knows that she was once the proud daughter of heaven, Su Mian, the most dazzling criminal psychology genius in the police force.
He is Han Chen, a cold and taciturn detective with the best criminal investigation ability in the city. He has lost his arrogance and traveled across thousands of mountains and rivers, searching for the fiancée in his memory for five years. He forgot her name and appearance, but he remembered deeply that he would not marry her unless she was in his life.
A series of strange serial murders sweeps the city. The death of the deceased is bizarre, the murderer's murder methods are precise and cruel, and the mysterious Alphabet Killer organization quietly lays out its plans in the dark. Each case points directly to the dusty truth of five years ago.
Fate made the two reunite unexpectedly. They were tit-for-tat when they first met, and they had a perfect understanding when they met again. He uses traditional criminal investigation to peel off the cocoons, while she uses criminal psychology to gain insight into people's hearts. They join forces to solve strange cases repeatedly. Ambiguity grows crazily in the moment of life and death, and deep love gradually becomes clear in the fog.
The gentle and paranoid forensic doctor Xu Sibai is by her side, affectionate, but there is unknown darkness and obsession hidden in his eyes; seemingly harmless relatives and friends have hidden murderous intentions; loyal teammates are in danger.
As the investigation deepens, memory fragments continue to be pieced together, and the tragedy five years ago, the reversal of identity, the organization's conspiracy, and the entanglements of love and hate all come to the surface.
It turns out that all encounters are reunions after a long absence, all cases are deliberately foreshadowed, and all survivors
