Callen, Sam and Nell travel to the Angeles Forest to search for pieces of a failed rocket launch, including a top-secret government device. Also, Hetty tries to help Keane acclimate to life in the states.

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.