The team must work with a SWAT unit to rescue the students of an elite international private school in the Washington suburbs who have been taken hostage by unknown captors. On base, Lissy becomes interested in the son of an Officer.

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.