Their tropical vacation was going well until the finny friends realize that the Great Conch Shell is missing. Uncle Blenny can't open the Founder's Day Festival until the heralded horn has been recovered. Your child will join Freddi Fish and Luther as they explore ancient ruins, play games at a fun-filled carnival, and discover a sunken airplane while looking for clues and finding adventure. Rosy Pearl, Pierre the Tailor, and Nadine the Narwhal are just a few of the fun new friends they'll meet as they follow Old Soggy's sniffer through this tropical paradise. In the end, it's up to your child to piece the clues together and figure out who's responsible for this underwater caper.