Shelby John and Ruby Red, both recovering from addiction, plan to start anew but their plans are cut short when Ruby is found dead on their porch. Bent on revenge, Shelby sets out to take down the dealers who supplied Ruby with drugs, using nothing but a nail gun to inflict his vigilante justice. As Shelby hunts down the local crime lord, Coyote, the town's sheriff, Church, must stop him before the town descends into a violent chaos.