Sean Kilpatrick is a pacifist sheriff in the small Texas border town of Santa Rosa. His dedication to law and order without violence is tested when notorious outlaw Frank Brand and his gang raid the town. The brutal attack leaves Kilpatrick's wife and son dead, prompting a transformation in him. Devastated and fuelled by revenge, Kilpatrick resigns as sheriff and tracks Brand and his gang across the border into Mexico. He forms a precarious alliance with Mexican Federale Gutierrez, who has his own reasons for hunting the same outlaws. The journey plunges Kilpatrick into a world of violence and moral ambiguity that challenges his fundamental beliefs.

As he wades deeper into the treacherous terrain, Kilpatrick is confronted with the harsh realities of his pursuit. He navigates numerous perils in the lawless landscape where justice is often swift and brutal. With each encounter, his former ideals clash with the raw need for vengeance, pushing him further down a path he had hoped never to tread. He grapples with internal conflicts and dangerous confrontations, culminating in a transformative quest that tests his resolve at every turn. As tensions mount and the line between hunter and hunted blurs, Kilpatrick faces choices that will define his future actions and ultimately, his fate.