Desc: Luftburen: Directed by Bengt Forslund. With Olof Lundström Orloff, Margaretha Byström, Solveig Ternström, Jonny Quantz. 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.