Leaders of South Korea, North Korea, and the U.S. hold a summit in Wonsan, North Korea to discuss North Korea's nuclear issue and peace in the Korean Peninsula. Interrupted by some North Korean hardliners who have raised a coup, the leaders of the three countries are abducted and taken away on a North Korean submarine.As the North Korean hardliners, the U.S., Japan, and China each set up their own plans for war, how will President Han of South Korea, who is trapped inside a submarine, overcome this crisis?