E.J. Mackernutt, Jr., an 11-year-old boy who has always been fascinated by space and astronauts, sneaks into Cape Kennedy and becomes a stowaway on a spaceship scheduled for a lunar landing. After he is discovered, NASA at first cancels the landing, but E.J. and the astronauts convince them to go forward with it. Problems arise when one of the astronauts is incapacitated by illness and the other two are stranded on the moon's surface, but E.J. is able to command the space capsule and save the day.
| Directing | Andrew V. McLaglen | Director |
| Writing | Jon Boothe | Writer |
| Writing | William R. Shelton | Novel |
| Sound | Patrick Williams | Original Music Composer |
| Editing | John F. Schreyer | Editor |
| Art | Allen E. Smith | Art Direction |
| Camera | J.J. Jones | Director of Photography |
| Production | John Cutts | Producer |
| Art | Robert De Vestel | Set Decoration |
| Production | Maurie M. Suess | Unit Production Manager |
| Directing | Jack Barry | Assistant Director |
| Sound | Lionel Newman | Music Supervisor |
| Production | Jack Baur | Casting |
| Crew | Joe Zomar | Special Effects |
| Crew | Joe W. Schmitt | Technical Advisor |
| Production | Carl Kugel | Associate Producer |
| Crew | Joseph Silver | Post Production Supervisor |
| Production | Mark Evans | Production Supervisor |
