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.

When Angie is put in a dangerous situation, she can only leave him one clue as to what has happened to her. JT must recall his old Special Ops missions in order to find the answer.

When a general is kidnapped in Spain, JT and his team go to rescue him but find themselves in a turf war with local authorities.