Chen Tan (played by Aaron Kwok) went to Thailand as a private detective to find their whereabouts when he grew up because his parents disappeared when he was young. During the investigation, it was discovered that the parents had already passed away. He vowed to find the killer who killed his parents, and tried his best to find out that his parents' good friend, Uncle Chai, is now in Malaysia. So I went to find Uncle Chai, but I was told that Brother Peng, who knew the truth back then, was dead. At this time, Detective Chen received news that his home had been stolen, so he was even more convinced that the death of his parents was not an accident, so he found Malay private detective Zheng Fengxi (played by Zhang Jiahui). Zheng took over the task because of lack of money. Help investigate the hideout of a local drug lord. The two were followed during the investigation, Chen Tan was wounded and escaped, Zheng was knocked out, and Uncle Chai disappeared suddenly. Tan Tan followed Uncle Chai's adopted daughter Zhihui (played by Jiang Yiyan) to find Uncle Bo, who was killed shortly after Uncle Bo gave him the evidence tape. Zheng felt that Chen Tan's case was too difficult, and he did not want to participate any more, and was about to leave. A group of people who killed Uncle Bo rushed up to surround them, arousing Zheng's sense of justice, and decided to help Chen find out the truth of the year