A sweltering summer night along a barren stretch of the US-Mexican border. Agents of the US Border Patrol are on routine watch. Hours pass and all is quiet. Then suddenly two figures emerge from the darkness. They see the agents and begin to run. With sirens blaring, the pursuit begins. One agent calls for backup and a helicopter is dispatched from headquarters. Within minutes two are in custody along with two kilos of cocaine. This documentary explores the gritty world of the US-Mexican Border Patrol and their state of the art detection, inspection, surveillance and intelligence systems.