Taxi driver Peter Basse is a jovial and cheerful man who faithfully looks after his daughter at the wheel and steers his carriage through the streets of Copenhagen with unwavering composure. One day he drives for the stylish valet Johan, employed by the old Dowager Baroness von Hessen. The taxi driver is tasked with delivering an important letter to the Dowager Baroness's grandson. Along the way, Peter Basse learns that the Dowager Baroness may be going crazy. In any case, she has made the acquaintance of two spiritualists.

The attic of a city house is the home to a colony of artists. Among them is a writer, whose corpus is larger than her output. We also meet a hard-of-hearing poet who can still hear the grass growing. There's a painter, a sculptor and more. All are penniless - hoping that one day they will experience their breakthrough. "The Seventh Heaven", as the corridor is called, also houses two prominent residents, Fyrtårnet and Bivognen. They have set up a small diner and engage lively with the artist from the colony.