Yuncheng City is located on the border, with picturesque scenery and spring-like scenery all year round, and is full of tourists.
Because it is located on the border and close to the Sangui zone, drug smuggling is serious here and crime is high.
Countless anti-drug police officers have sacrificed their lives.
Anti-drug policewoman Wen Nuan died in the line of duty, and her boyfriend Qin Bohuai gave up business and entered politics for her.
The local wealthy Gu family colluded with overseas personnel to participate in the drug trade and launder money.
In order to obtain evidence of the Gu family's crimes, the Public Security Bureau has trained a large number of undercover agents to infiltrate the Gu family over the years.
Purpose: Fight crime