Muslim terrorist organizations are becoming increasingly powerful. In order to thwart their international conspiracy, FBI agent Roy Clayton (Guy Pearce) was sent to investigate. However, during the investigation, he accidentally discovered that many clues showed that former special operations officer Seymour Horn (Don Cheadle) had close ties with a terrorist organization. Horn was originally an undercover CIA agent. As a Sudanese Muslim, he easily broke into the terrorist organization. But Clayton, who was relentlessly searching for evidence, realized that Horn was no longer a simple undercover. As the investigation deepened step by step, the truth of the matter gradually surfaced, but the complexity behind everything was far beyond Clayton's expectations... Completely obsessed with finding secrets hidden in the dark, Roy tracked Seymour almost all over the world, and he himself was gradually entering an underground world composed entirely of conspiracy and trickery...