As baffled law enforcement scrambles for answers about a series of increasingly violent bank robberies, counterfeiting operations, and armored car heists through the Pacific Northwest in 1983, a lone FBI agent stationed in the sleepy, picturesque Idaho town of Coeur d’Alene comes to believe the crimes are not the work of traditional, financially motivated criminals, but a group of dangerous domestic terrorists inspired by a radical, charismatic leader plotting a devastating war against the United States government.