GP是休战线边上非武装地带最前沿警戒区的哨兵，是冷战后的余留兵。07年五月的一个雨夜，GP506的20名队员全部被一名士兵所杀，由于506的队长乃是总参谋长的儿子，军方对此事高度紧张，派出卢搜查官（千浩振 饰）负责在一夜时间内调查出事件真相。搜查队当夜进入506驻防的戒哨营，除了存活的嫌疑人士兵姜春元（李英勋 饰）外，本应20具的尸体少了一具，搜查队发现了自称是506队长柳中尉（赵显宰 饰）的幸存...

Unemployed Jae-wook is dumped by his girlfriend without notice. He was a burden for Sae-mi who was at the age of having to think about marriage and her future and he wasn't disqualified for it. Ja...