Svante is a young boy who lives with his family in a Stockholm apartment. One day he meets Karlsson, a chubby little man in the prime of his life, who can fly using a propeller on his back and who lives in his little house on the roof.
| Directing | Olle Hellbom | Director |
| Production | Olle Nordemar | Producer |
| Sound | Georg Riedel | Original Music Composer |
| Art | Stig Limér | Art Direction |
| Editing | Jan Persson | Editor |
| Directing | Christel Tonnert | Script Supervisor |
| Production | Elisabeth Fahlén | Unit Production Manager |
| Camera | Jan Borgfelt | Still Photographer |
| Lighting | Hans Wallin | Gaffer |
| Lighting | Jan Alvermark | Gaffer |
| Lighting | Stefan Gustafsson | Gaffer |
| Editing | Sten Lindberg | Color Timer |
| Costume & Make-Up | Inger Pehrsson | Costume Design |
| Costume & Make-Up | Kjell Gustavsson | Makeup Department Head |
| Camera | Lasse Björne | Director of Photography |
| Writing | Astrid Lindgren | Novel |
| Writing | Astrid Lindgren | Writer |
