Four months after being shot, Agent Callen returns to the Office of Special Projects and joins the Los Angeles team on a kidnapping case.

A case involving the murder of a drug dealer turns personal for Special Agent Sam Hanna when he discovers his former Navy Seal comrades are involved.

The team is assigned to track down a missing unmanned aerial vehicle (UAV) after it is compromised during a training exercise, killing a Marine before it disappears.

When an Iraqi businessman is murdered, the team searches for the former Marine who was hired to protect him.

Following a murder, the secrets to classified software are thought to be lost until NCIS uncovers a suspect from Vance's past.

The NCIS team must find a motive when they discover the body of a Marine who had been living a double life as a wealthy bachelor.