在这部绝密特勤队动作片中,一支CIA小组的指纹被恐怖分子截获，就在2001年9月11日早晨，他们被堵在了洛根机场。此次悲剧导致很多低级探员被解雇，因此这支CIA精英队伍也随之解散。8年后，恐怖分子再次兴风作浪，CIA将不惜一切代价抵挡新的威胁。CIA为此重新组织了绝密特勤队ECHELON，人称E-8。这支备受争议的队伍仅有议会内部有权批准成立，知情者称为“保密者”。
In the early morning hours of 9/11 an elite CIA team known as Echelon 3 was denied access to Logan airport by the FBI, preventing them from acting on the intelligence that could have stopped the terrorist attacks. In the aftermath of the tragedy, the Echelon 3 team undeservedly took the fall and was quickly dismantled. Ten years later, with terrorist activities on the rise, a congressional shadow government committee known only as the Keepers, is re-instating the new and improved top secret unit now known as Echelon 8. The team is granted unprecedented approval of domestic charter allowing them to monitor U.S. communications and take every action necessary to protect the United States from the next terrorist attack. Can Echelon 8 prevent history form repeating itself or will the team suffer the same fate of its predecessor?
