The ending of "The Gatekeepers" is that Peixin filed for divorce. The plot of the final episode is as follows:

The Customs Drug Investigation Section entered combat mode, and Qinglang led his team to Ying Hui's house. The company arrested Ying Hui and Wei Ye, but they fell into a trap to lure him away from home. An unexpected person appears and threatens to kill Ying Hui and Wei Ye.

Zhiqi realized something after the arrest and expressed his feelings to Haifeng, and then discovered that Pei Xin had returned to Hong Kong. Peixin proposed divorce to Haifeng, but Haifeng nodded sadly even though he was reluctant. Jing'an thought Zhuo Lan had betrayed Ting Fei and was furious. Yu Lian accidentally fell into a consumption trap, and was helped by Jia Xing when she was hesitant. Peixin went to the lawyer's office to sign the divorce papers and felt melancholy. Later, she unexpectedly saw Haifeng's true confession and finally made a decision.

Plot synopsis

This is a story about the Hong Kong Customs. Through the work of Senior Supervisor of the Copyright and Trademark Investigation Bureau Haifeng (played by Yuan Weihao) and the Chief Trade Control Officer of the Trade Control Department Kwan Pui-yan (played by Yuen Weihao), Huang Zhiwen (played by Huang Zhiwen) and Customs Narcotics Investigation Section Supervisor Wen Zhiqi (played by Wang Minyi), the three lead a group of customs elites and young newcomers, including trainee inspector Chen Jiaxing (played by Chan Jiale), from egg tubes to atomic bombs, from milk powder tubes to white powder, All-weather, sea, land and air, showing the new look of smart customs.

This group of people are able to overcome difficulties despite their own adversity, adhere to the purpose of "protecting the law, observing customs, and being professional and responsible", and contribute to the stability and prosperity of local society. They are respected by Hong Kong people. Proud "gatekeepers".