When the body of a Texas Ranger working undercover in Mexico as a member of a drug cartel is found dead on a South Padre Island beach, Jimmy Redstone, an injured Ranger spending time on the island, is pressured into unofficially investigating. After the local Coast Guard Chief lands in the hospital after trying to give Redstone information he uncovered pertaining to the murder, Redstone begins to believe that more is going on than simple drug smuggling. Angella Martinez, an attractive rookie, draws the assignment of staying close to Redstone. Between fighting his unprofessional feelings for Martinez, keeping the rookie cop out of trouble and continuing their investigation, Jimmy's plate is pretty full. As they continue to probe, it becomes clear that activities far more dangerous than drugs are involved, activities that could undermine the very essence of American life if Jimmy and Angella can't stop them in time.