When Air Traffic Control error is blamed for a plane crash hugging 180 people, the controller at fault hijacks the control tower in defense of his innocence. The stakes are high as dozens of planes circle above, but when Matt and Emily learn that the hijacker's wife is having an affair, the negotiators realize that the pressures at work aren't the only issues the hijacker is coping with. The situation hits a little too close to home as Matt and Emily get a glimpse of what could happen when personal lives get in the way of careers, and Emily pushes a hesitant Matt to go public with their relationship.
Matt Flaherty and Emily Lehman are top-ranked crisis negotiators in the FBI's Crisis Negotiation Unit who are trained to talk their way through volatile situations. They make an outstanding team professionally, but their relationship is a bit more precarious off the job. The series advances the fundamental idea that in life and in love "Everything is a negotiation".