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.

McNulty and his staff must act quickly to keep a terrorist ally from slipping away. Meanwhile, someone from JT's past figures into his misson of sending his old unit into harm's way when a high-risk mission requires the best of the special-ops teams.