Rad Roberts, with the Iowa Attorney General's Office, is asked to monitor an escalating situation in which the FBI has dispatched dozens of agents to surround a cabin in the small Northeast Iowa community of Decorah as they attempt to arrest avowed survivalist Reggie Wade. The Imperial Nation, a white supremacist organization, adopts Wade as a symbol of resistance to federal domination generating nationwide publicity about the standoff. The situation intensifies when a kidnapping and an act of terrorism catapults Roberts into a desperate investigation unraveling a secret web of deception running all the way to the highest levels of the FBI. Inspired in part by a true story, Diamond Ridge explores the uneasy balance between individual rights and national security while shedding light on the dangers of unchecked law enforcement power and ruthless hate groups.