Sam assists a Department of Justice agent with locating a former U.S. boarder patrol officer who disappeared after the cartel threatened him; Kensi partners with a special agent from the Criminal Investigative Department to recover a stolen hard drive with sensitive military information.

While the team investigates the theft of a computer virus, Callen and Sam consider their future at the agency, Kensi and Deeks discuss having children, and Eric and Nell analyze the impact of Eric’s undercover assignment on their relationship. Also, the team tracks Mara a crooked upscale banker