Song Kang-Ho will play the protagonist, Kang Jong-Duk, a warrant sleuth who’s a few days away from being honourably discharged from military service.
He takes up a conspiracy case but struggles to solve it, all the while as his date of discharge looms nearer.
Ryoo Seung-Ryong will play the role of the perpetrator of the conspiracy.
It is the first time that Song and Ryoo will act in a movie together.
Park So-Dam plays a staff sergeant in the military organisation, and the possible love interest of Song.
Fifth Column was originally scheduled for release early next year but there is talk that it may appear on screens at the end of 2016!