In the quiet town of Shamerton, Arizona, Sheriff Ray Owens (Arnold Schwarzenegger), who once worked in the Los Angeles Drug Enforcement Unit, is diligently maintaining local law and order. On this day, several uninvited guests visited the town, and a farmer was murdered. At the same time, on the other side of Las Vegas, FBI agent John Bannister (Forest Whitaker) was escorting the notorious drug lord Gabriel Cortez (Eduardo Noriega). Unexpectedly, Cortez was rescued halfway, and he hijacked a female agent and drove a modified sports car to escape quickly, approaching Shamerton on the Mexican border at night. The quiet life of the town was completely broken, and Sheriff Owens was about to experience a chaotic day full of gunfire and killing...