A supposedly reformed Catwoman plans to launch a musical career. It's a cover for her latest scheme: a device that steals voices! Those hit by the electronic beam cannot speak at all. With British pop singers Chad and Jeremy about to visit Gotham, Commissioner Gordon has his hands full. Especially after the felonious feline steals HIS voice. Batman and Robin defeat Catwoman's men, but she drugs them with her claws, and then imprisons them in a gigantic echo chamber where high volume sounds will turn their brains to mush!