Rage paves the roads of Texas.
Al Quinn's quiet life as a retired sheriff's department detective is disturbed by a case of road rage. An angry driver shoots at Al's sister-in-law, Bonnie, and her baby. Bonnie returns fire and wounds her assailant, Ketchum, who leaves the scene. But that's not the end of the altercation.
Ketchum gathers some friends to help him get revenge. Al and his entire family are now in the path of enraged, payback-minded armed thugs who have little to lose.
Sheriff Clayton makes matters worse by asking Bonnie and the rest of Al's group not to kill the men so they can stand trial. Law enforcement wants to make a point about road rage. But Al would rather teach them not to mess with the ones he loves.