Jan and Gertrud have a sexual relationship, even though they are half siblings. Jan is an air traffic controller, while Gertrude is writing a dissertation on ferns. Jan falls in love with another woman, Jenny.
| Actor | Role |
|---|---|
 Solveig TernströmJenny Jeger | Jenny Jeger |
 Margaretha ByströmGertrud | Gertrud |
 Olof Lundström OrloffJan Backman | Jan Backman |
| JJonny QuantzSten Tidström | Sten Tidström |
 Fillie LyckowMarianne | Marianne |
| GGunnar OssianderStoll | Stoll |