Roy Fleming (Knotts) is a carnvial worker who operates the spaceship ride. Dad's upset the kid has no ambition and sends an application for Roy to NASA. Everyone's surprised when Roy gets accepted and he heads off to Florida but it turns out the job is janitorial. Still Roy does make friends with astronaut Red (Nielsen), who persuades NASA that Roy would be the perfect civilian to send up in an experimental capsule. Too bad Roy's terrified to fly in anything.