The Coast Guard

Private Kang loves his job in the South Korean military. He patrols the coast looking for North Korean spies. Despite the fact it's been awhile since anything has happened, he's convinced on a daily basis some spy is sneaking through and he'll be the one to find them. However one night, he mistakes a couple in the midst of some sexual encounter, for some North Korean spies and ends up killing the man. Kang starts to lose his mind over the guilt and the women who watched her boyfriend die, ends up completely insane. The descent into madness is slow and steady for Kang but the problems, he might do more damage within his country than any North Korean could.