When a Navy lieutenant and his grandfather are kidnapped from a retirement home, the team's investigation leads them to a con artist couple and the hunt for a rare coin; Callen meanwhile has to deal with his father's actions when he kidnaps the father of his grandson (and Callen's nephew).

When the daughter of a notorious counterfeiter arrives in Los Angeles, Sam is sent undercover as a financier, while Callen partners with Anna to track the family's latest scheme.

NCIS investigates the murder of a federal prison inmate who was the adopted daughter of a notorious counterfeiter. Also, Callen is summoned by the Alcohol, Tobacco and Firearms (ATF) Internal Affairs board to discuss Anna Kolcheck’s actions during a joint NCIS and ATF case.

After the prototype for a tactical assault suit is stolen from a Navy base and used in a Beverly Hills jewelry heist, the team must determine who stole the suit and what their next target is. Also, retired Navy Admiral Hollace Kilbride temporarily oversees the team while Mosely and Hetty face repercussions for the unsanctioned Mexico mission.

The NCIS team is joined by NCIS Special Agent Nicole DeChamps after a Marine reservist with a history of PTSD disappears following a drunk and disorderly altercation.

The NCIS team investigates the murder of a journalist who was writing an exposé on a mishandled classified military operation. Also, as their wedding day quickly approaches, Kensi and Deeks work on the last remaining items on their to-do list.

The NCIS team investigates the murder of a Naval warfare engineer at a spoken poetry event. Also, Callen asks Nell to assist him in a worldwide search for Anna's whereabouts.

The body of a murdered Navy reservist is found by thieves in the midst of a robbery and NCIS must work with the burglars to find the killer. Also, Kensi and Deeks struggle to decide if they are ready to make the leap and buy a house.