Five years ago, two captains of the city's criminal police team, Liu En and Zhou Chunyang, died mysteriously while solving a major case. The sons of the two criminal police officers entered the police force after graduating from the police academy and became their apprentices under their father's good brother Zhao Shanping, hoping to find out the truth. Five years later, Today, Zhao Shanping, who has become a famous "black policeman" of the city bureau, also died in mysterious circumstances. Faced with the price of death, whether to jump over the cliff and continue moving forward, or jump into the abyss to find out the truth, this choice is left in the hands of a new generation of criminal policeman, Liu Jining.
Intention: Carrying forward in the abyss