Poongsan

Poong-san-gae is a movie starring Yoon Kyesang, Gyu-ri Kim, and Jong-soo Kim. A young man crosses over North and South Korea to deliver the pain and longings of separated families.
Poongsan has the unenviable - and death-defying - job of delivering messages across the North and South Korean border to separated families. When South Korean government agents ask him to smuggle in In-ok, the lover of a high-ranking North Korean defector, into the South, the damsel and rescuer fall in love instead.