Nerve gas is stolen and the team is sent to retrieve it - a task made more complicated when it goes airborne and the pilot is dead. Back at home, Mack and Tiffy have domestic issues that require Col. Ryan's interference.
Bob, Williams and Grey are charged with rescuing a group of Embassy personnel and their families who are under attack in Abidjan, while Jonas tests his daughter's strength and conviction when she decides to enlist.
Mack begins to bond with a hostage who may need to be sacrificed to save operatives' lives. Back at the base, Bob is distracted from training exercises when Kim is put on bed rest, and Tiffy resorts to an uncomfortable job when her past affects her future.
Jonas, Mack and Charles guard a spoiled singer in Iraq, and Bob is charged with surrendering a foreign prisoner to his country for execution. At the base, Hector pursues a waitress, aided by the women.
When Charles is injured while the team rescues a journalist Jonas must try to save his life and still keep the mission on track, but it may not be enough. Back at home, Tiffy is victimized by a patron of the bar.
Jonas is asked to turn on an old friend, and things get complicated when Charlotte Canning reappears; at home, Kim fields a call from a depressed army wife who won't give up her location, and Charles feels guilty when he turns to Annie for comfort.