TOP 3 South Korean movies about North Korea

At the aspect of South Korean, recommend well-made Top 3 South Korean movies relating to North Korea. The Spy Gone North (2018) Based on a real story, well showing how South Korean spy contacts North Korea and manipulate the political event between South and North.

In the movie, Joo-Seok-Goong (Kim Jung-Eun's oval office) is also described directly which has been never revealed to the world offi.....