Bob and his translator survive a helicopter crash in remote Russia, but still must fight for their lives in extreme conditions without their gear, causing Bob to flashback to the selection process that got him into the Unit.
Jonas has been captured in the Republic of Georgia and offers himself up as a bargaining chip for a prisoner exchange. When Colonel Ryan's efforts to gain cooperation from Washington fail, he sends the unit to make its own prisoner exchange. Meanwhile, Tiffy is facing a court trial she will surely lose. Charlotte still refuses to step up and tell the truth, but offers other help.
Jonas and his family celebrate his father winning the Silver Star, but there is trouble when a young soldier takes out his combat frustrations on his young wife. Meanwhile, Mack and Bob must help a man fly a plane after his pilot mysteriously dies.
When the unit is stranded with high-priority prisoners in Waziristan, they take refuge at a forward support base, but a CO who's not in command and a cocky sergeant not only jeopardize the mission but everyone's lives as well.
While in Israel to work out a solution to a suicide bomber threat, Charles falls for a soldier who takes him into danger. At home, Tiffy finds herself in a windfall and a crisis of conscience as she struggles to do what's right.
Bob and Hector find themselves involved in tribal rituals when they are sent to Papua New Guinea to retrieve equipment; back at the base, Jonas and Mack deal with Crystal's revenge and its threat to the team.
While Mack, Grey and Williams protect a Thai prince and his family on American soil, they stumble across palace intrigue, temptation, and plots inside the treacherous family that involve infidelity and murder. Can they save the Prince from his own murderous clan as well as from the external assassination attempts? Against Ryan's better judgment, a battle-worn Jonas joins Bob on a mission to bring down a terrorist leader. But after a dangerous parachute jump from over 40,000 feet, a mid-air malfunction changes Jonas' number-one mission to saving Bob's life.
The Team's world collapses when they return from a successful mission to discover The Unit has been shut down and all Unit members are under governmental investigation for secret misdeeds of the past. This is no security drill, no training exercise: it's the real thing, and it's a noose around the neck of every Team member. The men learn The Unit will be disbanded and the men, court-martial ed; Ryan relieved of command and retired in disgrace, and the community that Molly and the other women have worked so hard to build will be shattered and scattered to the wind.