The NCIS team investigates the murder of a petty officer who was in town to help a refugee family being recruited by terrorists. Also, Wade works on the special election campaign for Mayor Zahra Taylor that takes place during Mardi Gras.

NCIS investigates the disappearance of a congressional aide after a hitman saves her from two men posing as NCIS agents. Also, Lasalle struggles with life-altering decisions regarding his brother's future.