After he was released from prison, Pan Jingang turned over a new leaf and opened a karaoke bar. Soon, another diamond thief appeared with the same modus operandi as Diamond Pan, and the police suspected that Diamond Pan was making a comeback.
Police officer Bao and the police surrounded the karaoke room. Pan Diamond jumped out of the window and fled to the home of his old friend Wang, who had sold stolen goods for him. Diamond Pan asked Wang to chase the diamond thief with himself and learned the names of several rich women with the most diamonds from Wang.
That night, a rich girl named Fang Daling made an appointment with Diamond Pan. I didn't know this was a trap for inspector Bao. Diamond Pan, who was on time for the appointment, was caught by the police. Inspector Bao handed the diamond pot to Fang Daling, who took it home. Since then, Diamond Pan and Fang Daling have jointly cracked several whistle-blowing cases, such as Wang, Tian Xin and his cronies, and Diamond Pan was able to recover his innocence. Fang Daling fully explained the misunderstanding of Diamond Pan, and they became lovers.