In Laredo, Texas, officers and agents of the Department of Homeland Security target drug smuggling and illegal immigration. In this episode of Border Wars, agents chase down a car filled with illegal immigrants heading north. When the group bails from their vehicle, agents must run through thick brush in search of the immigrants, who face imminent dehydration in the south Texas heat. At the Laredo Port of Entry, a group of officers uncover a spare tire thats loaded with a massive currency seizure - money likely headed into cartel hands south of the border. Meanwhile, the Laredo SWAT team prepares for a bust on a suspected gang members home in search of cocaine and black tar heroin.