Melvin Byrd, who dreams of being a scientist, is a Cape Kennedy "miniscule molecular particle surveillance monitor" - in short, a janitor. His job is to keep a major rocket project completely dust-free, and this he does with his own hilariously fantastic inventions - including a literal attack on dirt by a "knight on a white horse". In his work, he meets Judy, a chimp involved in a top-secret project, which leads Melvin into the one room strictly off-limits to him. Not until he has entered the project room does Melvin learn that any man entering it will be negatively ionized - making him fly like a bird.
as Melvin Byrd
as Lieutenant Porter
as Professor Wald
as General Smithburn
as Congresswoman Clanger
as Claudine Wald
as Sergeant Skam
as Yellow Cab Driver
as Devlin
as Arno
as Clurg
as Professor Nep
as Doorman
as Curtis
as Willie
as Radar Operator
as Golfer
as Man Looking Through Window At Melvin Flying