1990年代中期，暗号「黑金星」的南韩「国家安全企划部」情报员，假扮成南韩商人跟北韩进行商业交易，藉此渗透北韩军事单位，打探核开发情报，他得在最危险的地方，赢得敌方的信任，没想到一心只想完成任务的他，却在不自觉中陷入南北韩权力高层间的恐怖阴谋。In 1993, former military officer Suk-young Park is recruited as a spy by South Korea's National Intelligence Service, and given the code name "Black Venus". He is then sent to infiltrate a group of high-ranking North Korean officials based in Beijing, with the ultimate goal of acquiring information on the North's nuclear program. After becoming close to Myong-un Ri, a key power broker, Black Venus succeeds beyond his wildest dreams of gaining the trust of North Korea's leadership. But political machinations on both sides of the border threaten to derail his accomplishments.