Sequel to The Mouse that Roared; The Tiny Country of Grand Fenwick has a hot water problem in the castle. To get the money necessary to put in a new set of plumbing, they request foreign aid from the U.S. for Space Research. The Russians then send aid as well to show that they too are for the internationalization of space. While the grand Duke is dreaming of hot baths, their one scientist is slapping together a rocket. The U.S. and Soviets get wind of the impending launch and try and beat them to the moon.
You can now watch The Mouse on the Moon online on the following streaming providers in the United States.
| Writing | Michael Pertwee | Screenplay |
| Directing | Richard Lester | Director |
| Writing | Leonard Wibberley | Novel |
| Production | Walter Shenson | Producer |
| Sound | Ron Grainer | Music |
| Editing | Bill Lenny | Editor |
| Art | John Howell | Production Design |
| Camera | Wilkie Cooper | Director of Photography |
| Production | R. E. Dearing | Production Manager |
| Costume & Make-Up | Anthony Mendleson | Costume Designer |
| Art | Maurice Binder | Title Designer |
| Visual Effects | Trevor Bond | Animation |
| Art | William Alexander | Assistant Art Director |
| Directing | Ross MacKenzie | Assistant Director |
| Directing | Eileen Head | Continuity |
| Camera | Kelvin Pike | Camera Operator |
| Costume & Make-Up | George Blackler | Makeup Artist |
| Costume & Make-Up | Stella Rivers | Hairdresser |
| Costume & Make-Up | Laurel Staffell | Wardrobe Master |
| Sound | Roy Hyde | Sound Editor |
| Sound | Dudley Messenger | Sound Recordist |
| Sound | Bill Daniels | Sound Recordist |
