Taxi driver Jim befriends Ruritanian child King Ludwig while the latter is on a visit to London. A plot is afoot by sinister forces to kidnap Ludwig, and Jim becomes caught up in the drama. After the child is abducted Jim uses all his ingenuity, including cross-dressing as a Countess and becoming involved in a car chase, to rescue him from his captors.
| Directing | Michael Powell | Director |
| Editing | Arthur Seabourne | Editor |
| Writing | Joseph Jefferson Farjeon | Screenplay |
| Writing | Joseph Jefferson Farjeon | Story |
| Camera | Geoffrey Faithfull | Director of Photography |
| Production | Jerome Jackson | Producer |
| Art | W.G. Saunders | Art Direction |
