Gerald McBoing Boing, a little boy who can't talk but can imitate any sound, is working as a one-man sound effects department for a radio station. When a scheduled symphony orchestra does not show up, Gerald replaces them. He is doing fine until he mixes up the score with the sound effects script,...
While meeting a new friend, Gerald is abducted by aliens and whisked to the planet Moo. The king of Moo mistakenly thinks that all Earthlings - like Gerald - speak only in sound effects, and he attempts to converse with Gerald. Hoping to lure Earth tourism to his planet, the king brings the boy...
