During refits to three ships anchored in the shallows of the Bahamas a gang infiltrate the work crew and move from ship to ship emptying the gem safe of the jewellery shop on each vessel, but they are noticed by a whistleblower.

Undercover investigators board and the ship is locked down under a false quarantine. They need to find and question the whistleblower, but he has gone missing. With no one able to leave the ship desperation brews.