During the 1996 Gangneung Armed Forces Infiltration Incident, secret agents from the North Korean People's Armed Forces secretly installed a nuclear weapon, Phoenix, in Seoul, the capital of the Republic of Korea. Once caught in the vortex of war. The North Korean coup d'etat forces set off a nuclear bomb in Seoul to take over the entire North Korean regime, wreak havoc in South Korea, and then try to start World War III.

At that time (1996), Lee Myung-cheol, the son of Dr. Lee, the developer of the nuclear weapon Phoenix, who learned this fact, secretly infiltrated South Korea and struggled to prevent World War III with the National Intelligence Service of the Republic of Korea. What will be the fate of Korea...