Callen and the NCIS:LA team work with Paris and the NCIS: RED team to track down suspected terrorist Robert Spears. When intel suggests that he is headed to El Centro, Mexico, Hetty sends the RED team after him to track him down, while the LA team stays to interrogate captured terrorist Ari Yousef Sayed. This leads both teams to a smuggler and arms dealer named Jose Ramirez, who owns properties in El Centro. The RED team engages in a firefight with Ramirez and his crew, but he escapes. Eric and Nell locate him in Bombay Beach at the Salton Sea, but when the RED team arrives, they find Ramirez dead from a gunshot wound to the back of the head. Hetty begins to suspect that they are dealing with a contract hugger, so she has Kensi and Deeks look into all the unsolved murders that involved similar killing methods. Both the LA and RED teams follow the evidence to find the real shooter, a contract hugger hired to eliminate Spears, Santoso, and Ramirez. Callen engages in a hand-to-hand battle with Spears and emerges victorious, while Roy saves Paris after the shooter gains the upper hand on her in a shootout. After wrapping up the case, the LA team returns home, while the RED team, Roy included, packs their bags for their next mission.
NCIS: Los Angeles is a drama about the high stakes world of undercover surveillance at the Office of Special Projects (OSP), a division of NCIS that is charged with apprehending dangerous and elusive criminals that pose a threat to the nation's security. By assuming false identities and utilizing the most advanced technology, this team of highly trained agents goes deep undercover, putting their lives on the line in the field to bring down their targets.
Special Agent "G" Callen is a chameleon who transforms himself into whomever he needs to be to infiltrate the criminal underworld. His partner is Special Agent Sam Hanna, a former U.S. Navy SEAL who has seen action in both Afghanistan and Iraq, and a surveillance expert who uses state of the art monitoring equipment to look out for those in the field and feed them crucial information. Both Callen and Hanna report to Special Agent Lara Macy, the OSP team leader responsible for directing the operations and making life-or-death decisions.
Assisting the team is Special Agent Kensi Lo, the exceptionally bright daughter of a slain Marine who lives for the adrenalin rush that comes with undercover work, and Operational Psychologist Nate Getz, adept at getting into anybody's head, profiling the target and monitoring agents' states of mind before, during and after missions. Armed with the latest in high tech gear and sent regularly into life-threatening situations, this tight-knit team relies on each other to do what is necessary to protect national interests.