 The Flintstones and the Rubbles bring their children to a Marine Park. Barney gets attached with Dripper, a trained sealasaurus and star of the aquarium show. However, some henchmen working for a mysterious woman tries to kidnap Dripper. The latter follows Barney to the house. However, as they discover Dripper, Fred and Barney plans to bring it back at the Aquarium. But the henchmen, thinking they have Dripper, abducts Barney dressed as a scuba driver by mistake. It s up to Dripper to save his new friend, at at big risk...