After discovering a navy pilot's body riddled with unusual wounds, NCIS' investigation draws the team into the rabbit hole of UFO conspiracy theories.

Parker and Knight discover three bodies on an old Navy ship that's about to be sunk and turned into an artificial reef, when they're suddenly locked inside by a mysterious figure. Also, Vance offers Knight a unique opportunity.

NCIS works with the CIA to discover what secrets are being kept by Captain Butler, an elderly former spy with dementia.

Torres receives intel from a confidential informant regarding top secret naval information that's at risk of being sold.

When Torres receives a text from Jimmy's daughter that she has discovered a large sum of money near the naval library, the team works together to investigate.