线人

Li Cangdong is a supervisor of the Criminal Intelligence Division. His identity was exposed and he was stabbed several times and became a lunatic. Although Li Cangdong made meritorious service and was promoted, he felt guilty all the time

A year later, the police received news that the robbery, Bakuan, was going to return to Hong Kong to commit crimes. Li Cangdong’s boss asked him to arrange The informant, Li Cangdong found Xigui who was about to be released from prison, and Xigui agreed to Li Cangdong's arrangement in order to raise money to save his sister. With the cooperation of Li Cangdong, Xigui quickly gained the trust of Bakuan and his party, and even searched for gold shops and guns with Bakuan's girlfriend, brother. Li Cangdong thinks that the net can be closed now, but his boss wants to catch the current situation and make Bakuan go to jail for meritorious service. Under the pressure of his boss, Bakuan was finally allowed to rob the gold store, and then Xigui told Li Cangdong the location, and the police successfully arrested Bakuan. Bakuan destroyed all the physical evidence during the robbery, and the boss wanted Xigui to testify in court, but Bakuan's accomplices still fled outside, and if Xigui appeared in court, he would surely die.