Ankang, a former gangster, accidentally became a security guard because he was excluded by the head of the village, Li Daming, and later became involved in many disputes. He rescued Bai Xiaomei, who was sold, and went undercover in two major security groups to find out the truth about his parents' car accident and bring down corrupt officials. With his smooth loyalty and integrity, he was gradually promoted from security guard to director of public security, overcoming obstacles along the way and adhering to justice.
