Korean drama from dierctor Kim Ki-duk. Patrolling the militarised zone that separates North & South Korea, Private Kang (Jang Dong-kun) begins to grow more paranoid & starts obsessing about the possibility of spies infiltrating his coast guard area. Believing that killing a spy would demonstrate his worth as a soldier, he accidentally murders a civilian instead, an act that sends him plunging further down into a mindset of paranoia & madness.