When the Russians plan to trump NASA by sending a dentist into space, NASA moves quickly. Roy is found in a bar, rehired, and selected as the man least likely to venture into space and sent aloft. His father watches on TV, convinced the janitor story was a ploy for security reasons. During some eating experiments, Roy gets peanut butter into the guidance system and is in danger of being marooned in space. He remembers the retro rockets from his role as "Mr. Spaceman" on the amusement park ride and launches them, bringing the capsule safely home. Roy is hailed as a hero, and marries his sweetheart Ellie Jackson (Joan Freeman).