The Lightman Group are called in when Washington DC comes under terrorist threat; with national security at stake, Cal and co need to be on their A-game.
Sarah and Len alter a family outing to visit Lila's mom, Ali breaks off from the group to visit a friend, and members of the family engage in questionably authentic tourism.
Sarah tries a new parenting style, which surprisingly works. Josh reconnects with someone as tensions with Shelly increase. Ali is drawn to Palestine by an intriguing new friend.
Maura longs to forge a new relationship, but she finds that the connection is weak. Ali rejoins her family and Josh attempts tries to shoot a gun in the desert.