North Korea has continued to rattle the global community by going ahead with nuclear tests and ballistic missile launches, without fear of international sanctions. This documentary unveils the mysterious “Kingdom of Kim” based on material obtained exclusively by NHK. A classified national file in excess of 12,000 pages contained on one USB memory stick, apparently leaked from the Korean People’s Army, reveals the strategic plan of leader Kim Jong-un. What’s the meaning behind the series of purges of top executives? Why is the country obsessed with having nuclear arms at the forefront of its military strategy? Classified documents and numerous interviews with intelligence agencies, North Korean specialists, and former North Korean army soldiers expose the unknown inner workings of this shadowy country.