Officers' suspicions are raised on the Pharr International Bridge when a routine X-ray reveals suspicious packages hidden inside the tyres of a pick-up truck. Convinced that they contain hardcore narcotics, Customs and Border Protection officers call in a specialised team to help extract the packages from the tyres. Meanwhile, in McAllen, officers seize a huge shipment of marijuana - worth over $50 million.

Officers prepare to transfer two members of a cartel. In Laredo, a cop from Caracas, Venezuela, pleads his case for asylum in the United States.