Mr. Joly, doctor Cordelier's lawyer, is amazed to discover that his client and friend leaves his possessions to a stranger, Opale, a sadistic criminal. He needs this man to prove that people's behavior can be adjusted at will...
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.