A devious land-grabber has some plans for primo coastal property, which he plans to devalue by causing an oil spill. How? He’s also behind the kidnapping of a dolphin named Bluebeard from a marine park, and plans on using the aquatic prodigy to attach a magnetized bomb to the hull of a huge tanker. Bluebeard’s trainers use another dolphin, Gladys, and the help of Diana/WW (a.ka. “Aqua Woman”) to save Bluebeard from its nefarious agenda.