JT and the team travel to Mexico to apprehend a drug lord who has allied himself with Al Qaeda and is smuggling terrorists into the US. Meanwhile Bobby receives some bad news.

After escaping from the hands of Mexican Police following a doomed operation, JT and his team end up killing a drug gang and a federal agent on the American side of the border. As the team was debriefing in a Miami hotel, Sonny and McNulty were trying to solve the crisis started by a mole inside the Pentagon.