ICAC Chief Investigation Director Lu Zhilian (Gu Tianle) and Chief Investigation Director Cheng Deming (Zheng Jiaying) jointly investigate the smuggling corruption case and accidentally discover another major customs corruption case involving human trafficking. The case is related to King, the leader of the terrorist attack group, and his mastermind Xiao Zhuoya (played by Xie Tianhua). It also involves several senior Hong Kong Customs leaders. It also seems to have connections with Asia's Chief Justice Pang Emma (played by Xuan Xuan), who was invited to Hong Kong and secretly protected by JFIU Liao Baoqiang (played by Zhang Zhilin). The undercurrents are surging and confusing. When will the truth emerge...