Lu Haotian, a low-level police officer, saw through the predicament and sneaked into the gang's hinterland alone to work as an undercover agent.
He gave up his identity as a policeman and disguised himself as a two-faced man living in the gray area of the lower class, wandering on the edge of good and evil.
On the one hand, he has to win the complete trust of the gang leader and secretly collect all the criminal evidence; on the other hand, he has to contact the police secretly and beware of exposing his identity at all times.
Walking on the tip of a knife, with every step startling, he single-handedly tore through the layers of disguise of the underworld and embarked on an undercover road with a narrow escape from death.
The temptation of power and wealth, and the sacred status of a policeman kept him from forgetting his original intention.
