Inspired by real events, Sovereign is a tense and provocative thriller about a father and his teenage son - Jerry and Joseph Kane (Nick Offerman and Jacob Tremblay) - who follow the Sovereign Citizen belief system, a deeply antiestablishment worldview rooted in distrust of government authority. As the pair travel across the country delivering self-taught legal seminars and pushing back against systems they believe have failed them, their journey brings them into conflict with Police Chief Jim Bouchart (Dennis Quaid).