In a small town on the U.S.-Mexico border, a bomb explodes, killing two people as they drive into the United States. The incident calls for an investigation, drawing in Mexican narcotics investigator Mike Vargas, who is on the American side of the border with his new American bride, Susan. As Vargas begins to uncover the nuances of the crime, his path entangles with that of Hank Quinlan, a veteran American police captain with a reputation for solving cases through unconventional and often questionable methods. The explosion becomes the backdrop to a larger narrative, as Vargas postpones his honeymoon to pursue the truth.

As Vargas delves deeper into the case, he becomes increasingly ensnared in a web of corruption, finding himself at odds with the morally dubious Captain Quinlan whose tactics seem to exacerbate the situation rather than resolve it. At the same time, Susan finds herself isolated and vulnerable, navigating dangerous circumstances at a desolate motel. Tensions escalate as the couple's personal safety, as well as their relationship, are compromised amidst the conflicting interests of law enforcement and local crime elements. The interplay between justice and corruption lays the foundation for a gripping tale of suspense and moral complexity.