Bei Duofen and Qiu are good friends, also funny plainclothes partners. They always make troubles at the police station, which also brings the boss, Chen Ban, headaches. However, since Qiu and Anna get married, Bei Duofen becomes lonely and pathetic. Finally, Bei Duofen moves to Qiu’s house and create a three person world full of laughter with the couple. Chen Ban can’t bear it and transfer them to Officer Tian, who is known as “Shark Tian”. They get punished and suffer a lot. On the other hand, Chen Ban is framed by old enemy Flying Bandit. Bei Duofen and Qiu know their old boss got wronged, they secretly investigate and swear to find out the truth…...

Officer Tuba and Police Detective Chow attempt to hunt down a band of blackmailers. Unsuccessful in capturing the gang, Chow is gunned down and, in his dying moment, makes Tuba promise that he will defeat the gangsters and avenge his death. When Tuba goes on another police mission with rookie Cheung and tries to woo his girlfriend-to-be Joanne, he forgets his promise to Chow. Therefore, Chow's spirit appears and haunts Tuba, attempting to make him fulfill his mission....

Two orphans, A Lun and A Tian became sworn friends on the street of Macao. When they finally made their way, A Lun was tracked down in Thailand for killing a man of a gang boss. After encountering a childhood friend Kaxi, A Tian fell in love with her and the couple got engaged. What’s waiting for the two young men? ...