The Window (2012)

Sergeant Jeong Cheol-min's squad are in a renovated stock room with no window. The squad members are well known to be a hardworking group until Councellor Hong Yeong-soo comes in and starts causing trouble. Hong Yeong-soo seems to have difficulties adjusting to this environment. Things in the army changes rapidly, Jeong Cheol-min and his crew find themselves under attack perceived as the aggressors.