Usually dumb Don Knotts vehicle has Don as a carnival kiddie spaceship ride's small-town boss. Although he's extremely scared of heights, Don wants to be an astronaut and gets a NASA letter offering him a position, except that's part of the custodial staff. This being a Don Knotts photo, Don accidentally ends up in the astronaut program and hilarity ensures, or at least mildly funny comic moments of hilarity guarantee that nervous nelly Knotts are assisted by macho astronaut Leslie Nielsen through the program (which is humorous in itself since Nielsen will later be the comedic focus of "Police Squad"/"Naked Gun" as Lt. Frank Drebin). The movie also features Gilbert's "Little House on the Prairie" appearance from Melissa.