Sojourning in Macau, Su Erning by chance helps Pan Meiniang resuscitate his younger brother and fends off the thug. In her admiration, Pan calls off the engagement arranged by her mother to exchange vows with Su despite having known him for only three days. To raise the money for the wedding, Su plans to sell his family yacht to the rich wife of his classmate Lu Zuhua in Hong Kong and promises to buy Pan a pearl necklace. The promiscuous Mrs Lu seduces Su on the yacht and then dumps him. 18 years later, Pan's daughter is getting married. Su prepares a wedding gift—a stolen pearl necklace—for the bride but is too ashamed to show himself.

Master Tian (played by Li Jing) is the largest drug lord in Jiangcheng, he acts cautiously and was never personally involved in any transaction. Pingjiang City Police Bureau anti-drug brigade's captain Chen Changrong (played by Lu Nuo), in order to catch Master Tian, reluctantly went undercover in Master Tian's drug trafficking gang. The final showdown is about to start.