简要：Colonel Branson (Thomas Gibson) is the head of a secret department of the National Security Agency. He lets the Shadow Wolves continue to operate, even though they are independent and rogue now. After his daughter was killed while training civilians in Afghanistan, His anger drove him to defend the United States and its borders, regardless of their legality. When ISIS terrorists began to infiltrate Arizona across the US border, Branson reminded the Shadow Wolves to track and stop them. Branson sent Eric Shaw (played by Cody Walker), his deadliest and most effective agent, to join the Shadow Wolves. The Wolves were led by Nabach (played by Graham Green) Leader, he is a Navajo Honorary Veteran and also an old colleague of Branson. Meanwhile, in London, Ms. Milton Simon (played by Louise Lombard), the head of MI6's counter-terrorism department, dispatched her elite agent Major McLaren (played by Tom Hutch) to track down a terrorist named Khan (played by Solomon Shiv), who had a personal grudge against the United States and the Shadow Wolves. Ms. Milton and McLaren learned that Khan was going to Mexico...
