The NCIS team must determine why a murdered Navy drone pilot was using a black market drone to obtain military surveillance, and whether the drone’s footage is linked to his death.

The life of a genius Navy coder employed by Brody’s mother, Olivia Brody, hangs in the balance after the heart intended for his transplant is stolen. Olivia joins the NCIS team as they race to locate the missing organ.

Pride and Sonja are ambushed after traveling to Texas to escort a key witness for the trial of an infamous arms dealer who Pride apprehended.

While Special Agent Pride and the New Orleans team investigate a Russian sleeper agent who was involved with Abby’s brother, Luca, Sebastian flies to D.C. to partner with Abby on the forensics in the case. Also, Bishop drives through the night to deliver a package and work the case with the New Orleans team.

The crossover starts on NCIS S13E12 Sister City (I).

When a mystery man saves the life of a Lieutenant and then disappears from the scene, the NCIS team unravels a new case when forensic evidence suggests he is a soldier who was captured in Afghanistan years ago and never found.

After tracking stolen Navy TNT to a cocaine warehouse, Special Agent Pride and the NCIS team uncovers a domestic drug ring that is producing their own cocaine and headed by Sonja’s childhood friend, Marion Watkins.

A Navy captain ends up being murdered during an appearance on a local radio show. Pride's daughter returns home to discuss her plans for the future.

Agent Brody realizes that there is a connection between the case of a sailor hit by a party bus and the death of her sister.

The NCIS team investigates the murder of a Navy Lieutenant during a French Quarter second line funeral procession, a New Orleans tradition that celebrates the recently deceased with a musical street parade.

A Navy culinary specialist is the target of an explosion while visiting her family’s 100-year-old restaurant in the French Quarter. Also, Brody is in D.C. tracking a lead in the General leak case.

The NCIS team partners with Homeland Security after the murder of a Navy master diver is linked to chatter of a foreign attack on the city.

Pride must protect a beloved family friend who is engaged to the number one suspect in the ongoing NCIS and FBI cartel case.

Sebastian is sent undercover and Patton exercises his former gambling skills, as Pride and the team attempt a dangerous operation to trap Garcia.

Unable to trust anyone in New Orleans, the NCIS team calls in FBI Assistant Director Isler to help expose and stop the sinister scheme Mayor Hamilton has planned for the residents of Clearwater. Season Finale.

While Pride remains on probation six weeks after his rogue takedown of the corrupt Mayor Hamilton, his team is closely monitored by Supervisory Special Agent Paula Boyd. Also, when the FBI arrives to run lead on a case involving a stolen big rig of nuclear waste, the team must secretly investigate from the sidelines.

Pride and his bar patrons, including Sydney Halliday who is visiting Pride after leaving the Army, are held hostage by a group of volatile thieves.

While Pride fights for his life in the ICU, the team scours the city for the hit woman who attempted to assassinate him.

While NCIS investigates the murder of a Navy intelligence officer killed during a conference for foreign diplomats, the key witness cozies up to Sebastian. Also, Pride has some trouble adjusting to his new position at the agency.

NCIS investigates the disappearance of a Navy entomologist after a deadly shooting at a research lab. Nero, with Naval Intelligence, joins the investigation when the team discovers a rare and deadly virus was also stolen.