二十世纪70年代,旧金山出现了一个自称“十二宫”的杀人狂,杀人后,向媒体寄一封信,留下密码、线索,向警方挑衅,多次的阴差阳错使案件陷入僵局,警方渐渐束手无策。连环杀人案件也引起了《旧金山纪事报》的记者罗伯特和保罗的注意,他们在警察大卫的帮助下,开始调查这一系列的连环凶杀案件,在和“十二宫”杀手斗智斗勇的同时,他们个人的生活也面临了极大的挑战。。Based on real events, the story follows a father and son (Offerman and Tremblay) who identify as Sovereign Citizens, a group of anti-government extremists, as they venture across the country and find themselves in a standoff with a chief of police (Dennis Quaid) that sets off an intense manhunt with tragic consequences.。