A bracing journey into the tortured mind of notorious domestic terrorist Ted Kaczynski (Sharlto Copley), the so-called Unabomber. Deep in the American Rocky Mountains lived a man who sought refuge from modern society. His dark writings forewarned of a society ruled by technology. As the outside world encroached on his mountain sanctuary, he slowly became radicalised with rage. What began with small acts of sabotage, culminated with deadly bomb attacks, national media attention, and the largest manhunt in American history.