After hunting down a rogue spy as part of an elite CIA counterespionage unit, Garrett Kohl returns home to Texas. But it isn’t long before he’s approached in secret by an engineer working at a nearby nuclear weapons plant. Utilizing a unique skill set, Garrett embarks on an off-the-books investigation and learns that Iranian operatives are blackmailing weapons facility employees and potentially planning a devastating act of sabotage and destruction. Already engaged in an intense shadow war with Tehran and their Quds Force spies, Garrett’s CIA team rallies to take down the extortionists and dismantle their operation. But before they can get their mission underway, enemy commandos hijack a train carrying nuclear weapons and activate a lone wolf assassin to murder the visiting U.S. Secretary of Defense.

Special Agent Garrett Kohl has just taken down a dangerous and deadly cartel boss when he finds trouble brewing back on his family’s homestead. A powerful energy consortium, Talon Corporation, has started an aggressive mining operation that threatens to destroy Garrett’s land, his family’s way of life, and everything they hold dear. To achieve its goals, Talon is flouting the law, bribing public officials, and meeting anyone who challenges it with physical violence. When the Kohls themselves are attacked by Talon guards, Garrett goes on the offensive, embarking on an investigation that he hopes will rid the Texas High Plains of the intruders once and for all.

As a decorated undercover DEA special agent, Garrett Kohl has traveled the world --- and fought in most of it --- but it’s the High Plains of northwest Texas he calls home and dreams of returning to one day. Kohl is in the middle of an assignment in Afghanistan when his commander orders him back to Texas on a short mission expected to take a week at most. The once-peaceful ranching community he loves is under attack by a band of criminals who have infiltrated law enforcement and corrupted local businesses, and are now terrorizing Kohl’s own family. Hoping to prevent bloodshed, Kohl tries to resolve matters peacefully. But when the group strikes first, he has no choice but to go on the attack.