As New Orleans grapples with the effects of COVID-19, Pride sends Tammy and Carter to investigate a suspicious death aboard an offshore humanitarian ship; Wade is overwhelmed by the high volume in the morgue due to COVID-19.
Tammy and Carter continue to investigate a suspicious death aboard a COVID-infected humanitarian ship; Pride and the team discover what may be the key to finding the killer; Wade helps a grieving woman.
Pride and the team take on a group of dirty cops when they discover that a murder victim was also a key witness in multiple excessive force cases; Tammy faces the reality of being in a new relationship.
The team continue to investigate the murder of an officer who was about to blow the whistle on police misconduct; Pride must get creative in order to finally get rid of the dirty cops; the mayor asks Pride to join her new task force.
The team investigates a suspicious death and the missing key piece of evidence is a top secret, high-tech battery; Pride and the team realize there could be deadly consequences if it falls into the wrong hands.
When a torpedo hits a fishing trawler at sea, the entire Gulf Coast is in jeopardy as Pride and NCIS race to find the submarine before it can strike again.