In Jiangcheng, everyone knows the cold words of the owner of the "Buyu Detective Agency". He is thoughtful in his thinking and unruly in his actions, and he always touches the truth in unexpected ways. Within the police station, Captain Leng Yan represents absolute order and rules. Known for his iron fist, he is the nemesis of crime and the benchmark for respect among his subordinates.
The two are like two poles in a bright world, and they should never meet.
Until a murder case of a wealthy man in a secret room with extremely sophisticated methods occurred, and the two of them were involved in the whirlpool at the same time. Leng Yu, who was privately entrusted by the family, and Leng Yan, who was ordered to investigate, met for the first time at the crime scene. Confrontation is on the verge of breaking out, with one mocking the rigidity of the system and the other disdainfully crossing the line.
However, as the investigation deepened, they were shocked to find that all the clues strangely pointed to an old case that had been dusted twenty years ago - that was the starting point of Leng Yan's parents being killed and Leng Yu being adopted by the Leng family. What they thought was a chance encounter was actually an inevitable chess game set by fate.
Since then, the two parallel tracks have been forced to intersect.
Detectives and police, adopted children and parents, disorder and order. Two "strangers" who have the same surname but have never met have to embark on the same dangerous road to pursue the truth. They stand side by side in suspicion and temptation, help each other in collision and running-in, and gradually become the only partner who can trust each other's back from each other's most hated opponents.
The fog was lifted layer by layer, and together they solved one bizarre case after another. What stood before the end was not only the chilling conspiracy behind the tragedy, but also the cruel truth about love and sacrifice that had been deliberately concealed for twenty years.
When different paths lead to the same destination, what they face is looking back into the abyss.
Concept: Criminal detective case, stranger brothers, jointly uncover the mystery of life experience.