Bob's loyalty to Jonas and the Unit is challenged when he is recruited to work with the CIA on a covert mission. On base, Mack becomes convinced that Tiffy is having an affair.

Mack, Grey and Williams protect a Thai prince on American soil and uncover scandalous family secrets that include murder. Meanwhile, Bob's life is endangered when a parachute jump goes awry.

The team is investigated by a government agency that is probing into possible infractions that could result in criminal charges. Mack confronts Tiffy about Wilson and the CIA continues to try and recruit Bob.