Emma and Vivian finally find their brother, whom they were separated from at birth. But tragedy strikes the family once more as they discover he is a U.S. Marine in the Middle East who has been taken hostage by terrorists. They beg Sara, a former killing machine for the secret DCIA, to help him and she agrees, but in the only way she knows how: she's going to do it all herself. But Sara's carefully laid plans are laid to waste as she finds it is impossible to carry out this mission by herself. Can Sara save the hostages and get them out of the desert, even though one of the hostages is keeping something from her? Can JT and Dani nurture their fledgling love long enough to find a life outside of the Sinai desert? And when the rescue helicopter goes down with Hawk on it, who will save him?