An automobile is blown up as it crosses the Mexican border into the United States. Mike Vargas, a high ranking Mexican narcotics official on honeymoon with his bride Susie is drawn into the investigation because a Mexican national has been accused of the crime. The figurative and physical presence of Hank Quinlan as the 330 pound sheriff looms all over. Quinlan is a fanatic where "justice" is concerned, even if obtaining it involves planting evidence. Quinlan's reputation for law and order enables him to bend the law without question until Vargas confronts him. From that point on, it's a battle of wits between the two that, with an accelerating pace, rushes to a climax.