The Guard Post

In the desolate guard post that overlooks the DMZ, an entire platoon has been wiped out. A soldier is discovered with a bloody ax in his hands, then falls into a coma. A military officer is sent in to solve this mystery but is given only until daybreak to solve the case. As he struggles to gather clues and evidence, another survivor is discovered. Perfectly unharmed and holding the key to the case is the platoon leader. But he tries to conceal the truth to the point of sabotaging his work logs and attempts to escape the cursed guard post.