What kind of story is told in Episode 1 of Walker 2?

Bangkok, Thailand, 2010. Senior Inspector Cheuk Kai of the Criminal Intelligence Division of the Hong Kong Police Force pretended to be casual and patronized the fruit stall. On the surface, he was a picky tourist, but secretly he had already conveyed the message to Wing Xiang, an undercover man disguised as the owner of the fruit stall. He came to Bangkok to arrest Jiu Zhiqiang, the leader of the Hong Kong drug gang. Zhuo Kai conveyed the action plan through Morse code and left quietly. Next, Zhuo Kai arranged for undercover agents Wing Xiang, Athlon, Tomato and others in Bangkok to grasp the whereabouts of Jiuzhiqiang. They successfully checked Jiuzhiqiang's cell phone call records and installed eavesdroppers. To Jiuzhiqiang's body. After finding out where Jiu Zhiqiang was staying, Zhuo Kai collected the garbage from Jiu Zhiqiang's hotel. Zhuo Kai, who is experienced in reconnaissance, quickly found useful clues from Jiu Zhiqiang's seemingly useless garbage bags. After discussing and analyzing with Wing Xiang and combining it with the stolen call records of Jiuzhiqiang, Zhuo Kai finally concluded that the time and place where Jiuzhiqiang and Bangkok drug traffickers met was Warehouse No. 8 in Rayong City, Bangkok the night after tomorrow! Sure enough, Jiu Zhiqiang and Bangkok drug dealer Nichkhun met for business at the time and place analyzed by Zhuo Kai. Zhuo Kai lurked near the warehouse and watched them complete the transaction. Zhuo Kai was about to take action when suddenly a handsome young man walked over whistling. The young man's name is Le Shaofeng, and he is a celebrity of the boss of the Jiyun Gang.