Children (2006)

The movie progresses when after 5 years of the kidnappings a disgraced Documentary producer Kang Ji-Seung who after getting a transfer to countryside of Mount Wa-Ryung teams up with kidnapping obsessive psychology professor Hwang who teaches at a local national university to solve the mystery of kidnappings after watching an old case interview in his regional media office in cold files of the case. Kang sees this opportunity as his ticket back to national fame and success. And then they start exploring the facts and clues in order to reach on some concrete conclusions which brings some disastrous consequences and the mystery deepens as the time progresses.