Um 강철비, Steel Rainplayed, a former agent of the North Korean Reconnaissance General Bureau, was recruited by the director of the General Investigation Departmentto assassinate Park Kwangdongcoup attempter in the Kaesong Industrial Park on the border between North Korea and South. Um 강철비, Steel Rain did not wait for Park Kwang-dong after arriving in Kaesong, but encountered the incident of North Korea's No. 1 character being attacked. In the chaos, Um 강철비, Steel Rain escorted the seriously injured and unconscious No. 1 to South Korea.
During this period, North Korea declared war on South Korea and the United States, and South Korea issued martial law. South Korea's chief secretary of foreign affairs and security, Kwok Cheol-woolearned that North Korea's No. 1 figure came to South Korea. In order to stop the war, he began to try to contact Yan 강철비, Steel Rain
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