A petty officer is murdered during Mardi Gras festivities; Pride contemplates what to tell his daughter about his strained relationship with his father.

Pride (Scott Bakula) suspects a mole among the ranks as NCIS and local law enforcement continue to track the Broussard Syndicate after new intelligence suggests a breach at the ports.

After Rita Deveraux tells Pride that Douglas Hamilton is about to make a deal to get out of prison, Pride and the team rehash the Clearwater case in hopes of locating his mystery partner and spoiling his bargaining chip.

Pride’s father, Cassius Pride, is wrapped up in an NCIS case involving a notorious unsolved casino heist from several years ago. Also, Pride meets a family member he never knew existed.

While on a sunrise jog, Pride is grabbed by two masked men who order him to complete a series of tasks in order to save Wade and his father, Cassius Pride, who are being held captive.

Pride and the NCIS team hope to take down a secret and lethal group of former intelligence agents and avenge the death of someone close to them.