Fransiska is visited by a social worker when she's in the custody. She tells him her lives story, about her mother who was an alcoholic, her father a night watchman and how she and her five year old little sister was left. Her boyfriend was unemployed and needed money and to help him she stole money.

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.

A professor's convictions about modern sexual education and free love are challenged when his daughter decides she wants an abortion.