All his life, plucky parrotfish Alex has dreamed of being a superhero. He gets his chance when a mysterious flood of black goop erupts near his coral reef. As Alex and his pals a sea horse, an eel, and a blowfish swim off to confront the menace and save their home, they face a sunken ship with hidden treasure, an abandoned airplane, angry sharks, and an undersea volcano. This thrilling, funny family tale stars Mark Hamill, Justine Ezarik, and Ron Perlman.