Equator

South Korea's secret nuclear weapons disappeared mysteriously, and at the same time, a plane carrying a military portable device crashed in China. South Korea receives news that a suspected dangerous person nicknamed "Equatorial" (played by Chang Chen) and his assistant "Courier" (played by Moon Yeong-shan) will conduct a secret weapons transaction in Hong Kong. South Korean weapons expert Cui Minhao (played by Ji Jinxi) and agent Park Woo-cheol (played by Choi Siwon) are ordered to investigate. Hong Kong Anti-Terrorism Special Task Force Director Li Yanming (played by Nick Cheung) and Inspector Fan Jiaming (played by Shawn Yue) assisted South Korea in finding weapons, and nuclear physics professor Zhao Zhiren (played by Jacky Cheung) was also invited to assist in judging the case. The weapon was quickly recovered, but unexpectedly there was a potential crisis hidden there. Just as the police in Hong Kong and South Korea decided to return the weapons to South Korea, a senior executive of the Mainland Security Bureau (played by Wang Xueqi) and his assistant Miss Yuan (played by Feng Wenjuan) suddenly appeared. The three parties were involved in a struggle. It turned out that there was someone else in the "Equator", and the conspiracy of their group also began to be implemented...