After their mission, a group of desperate terrorists meets at an old abandoned building. When one of them, seemingly shell shocked, gets lost in the lower floor, the other three go looking for him. The lift breaks and suddenly all four are trapped in a brooding maze of corridors and rooms. Then things really start to go wrong. Terrifying, inexplicable sounds and happenings. Echoes of traumatic events from their lives. It’s as though they’re being tormented by the spirits of the dead. And that’s not all, the leader of the cell has a murderous secret that she’s keeping from the rest of her crew. As the shadows move like mist, as the screams in the darkness take on an accusing ring, will any of the four survive, or have their fates been decided for them?