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.
They make it seem like a happy thing, the dog escaping from the car (which is awesome the dog lives of course) and the dog runs down the road seemingly happily, but she is basically homeless and there is no closure as far as what happens to her after that scene.