When L.A.X. receives word from Homeland Security that a credible threat has put the airport on high alert, Harley and Roger debate over whether to notify the public or continue to keep the news a secret. Tensions build when passengers are faced with longer lines due to extra security, and Roger puts his relationship with his daughter in jeopardy when he refuses to let her fly—forcing her to miss a very important recital. Meanwhile, Tony must take care of a senile old woman who has been left stranded at the airport by her son, who can no longer bear the burden of taking care of her.

An African political activist who was wrongly convicted of murder arrives at LAX to board a flight which will return him home for execution. As protesters try to prevent his departure, the airport becomes the sight of political unrest forcing Harley and Roger to keep the peace. However, when Roger's city council aspiration prompt him to make a bold move, the two airport chiefs stand on opposite sides of this political powder keg. Meanwhile, Nick must confront a past decision when a former passenger returns begging for his help.