overview
senior criminal intelligence inspector zhuo kai (miao qiaowei) appeared in bangkok, thailand and obtained important information locally: jiuzhiqiang has a drug deal with ni kun, thailand aaa。 after investigation, it was found that ji yun gang hei chi hei killed ni kun and traded with jiufing qiang. in order to find evidence of ji yungang's crime, zhuo kai and the undercover sneak into the club den were discovered by deli's subordinate le shaofeng (played by zhou baihao) and fought with them. after escaping, zhuo kai and his group were about to leave thailand and return to hong kong, and all the undercover agents except zhuo kai were buried in the fire. the heartbroken zhuo kai faces suspension after returning to hong kong and becomes in a slump. at the same time, the largest club in hong kong, changxing, has an internal strife. wei dexin (played by chen hao), the new leader of changxing, used decisive means to wipe out the senior leaders of the club, including qin huanxi (played by xu shaoxiong). however, qin huanxi is an undercover agent who has been lurking in changxing for a long time. facing this situation, he had thought of transferring back to the police force for help, but his wife suddenly had an accident and died tragically at the hands of the community, which made qin huanxi completely fall into the underworld.
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