The NCIS team investigates a shipwreck carrying exotic animalsthat now threaten the native wildlife on Oahu. Also, Alexsustains a career-ending injury and Kai asks Melanie, a fishand wildlife agent, out on a date.
While Doctor Andrews treats a foster kid for injuries sustainedat his group home, Shaun and team look to Lea's expertise withcars and auto repair to help a patient whose iron lung hasbroken. Meanwhile, the patient's niece, a documentarian,takes an interest in Shaun.
Joe Lycett is joined by Aisling Bea for a trip to the Croatiancity of Split, where they go on a dog walk organised by alocal animal shelter, try their hand at paddleboarding andvisit a museum of stuffed frogs. They also learn to prepare alocal fish dish despite neither of them liking seafood, andexplore the maze of alleys and squares that were once a palacebuilt by the Roman emperor Diocletian.
Andy's fate remains unknown as a trial date is set. Meanwhile,Vic and Sullivan are approached by an unexpected guest, andthe crew responds to a row of townhouses on fire.