The Unit's newest member and his wife quickly learn the ropes from the team and their wives after terrorists hijack a plane and threaten to blow it up.
Bob is left behind to face tough questions from the FBI concerning the plane hijacking while the other team members are sent to Africa to recover a downed Chinese military satellite.
As Mack and Tiffy prepare to leave the Unit the rest of the team travels to Pakistan to try to stop terrorists from unleashing a deadly smallpox epidemic.
The Unit feels betrayed when they assist a French general with the arrest of a former Yogoslav general wanted for war crimes, and Tom Ryan makes a surprising announcement.
The Unit pursues a terrorist who was smuggled into the U.S. with plans to detonate a bomb, and Kim worries after she witnesses an intruder on base talking to her daughter.