A seaman who was prepared to testify before a grand jury is murdered, which leads the team to discover the resurgence of an international human trafficking ring; a storm causes power outages all over the city.
The team investigates a murder on a U.S. Navy ship.
Inclement weather keeps DiNozzo, Bishop and her husband at the Dulles airport, where they end up working a case involving an elevated terrorist threat.
On Andrea's wedding day, Samantha must decide if she wants to be with Winston Funk or Todd; Howard and Regina's lives start to take separate paths.