A bump on the head sends Hank Martin, 1912 mechanic, to Arthurian Britain, 528 A.D., where he is befriended by Sir Sagramore le Desirous and gains power by judicious use of technology. He and Alisande, the King's niece, fall in love at first sight, which draws unwelcome attention from her fiancée Sir Lancelot; but worse trouble befalls when Hank meddles in the kingdom's politics.
| Directing | Tay Garnett | Director |
| Writing | Edmund Beloin | Writer |
| Art | Robert McCrellis | Props |
| Directing | Ralph Axness | Assistant Director |
| Sound | Jim Miller | Sound Recordist |
| Costume & Make-Up | Vera Tomei | Hairstylist |
| Sound | Victor Young | Music |
| Writing | Mark Twain | Writer |
| Crew | Ray Rennahan | Cinematography |
| Editing | Archie Marshek | Editor |
| Art | Roland Anderson | Production Design |
| Art | Hans Dreier | Production Design |
| Art | Albert Nozaki | Production Design |
| Costume & Make-Up | Mary Kay Dodson | Costume Design |
| Art | Edith Head | Production Design |
| Sound | Jimmy Van Heusen | Music |
| Crew | Billy Daniel | Choreographer |
| Sound | Johnny Burke | Music |
