Bo is getting married and is moving out of the apartment in the attic. He leaves behind unpaid bills for beer, food, and other items. Good thing that his friends are more than willing to pay on his behalf. Olsen, Clausen, and Egon all fight over what to do with the newly available space.

The apartment in the attic gets a new tenant, the widow Mrs. Hammerstedt.

Mr. Olsen is turning 50 and is feeling a bit depressed. Everyone decides to throw him a birthday party over in Rottehullet.

The house at Christianshavn is haunted. The ball from the handrail is floating and Mr. Olsen has a new drinking buddy that only he an see. All of this started when Mrs. Hammerstedt took delivery of an old dresser.

A few of the tenants at the house at Christianshavn have become practicing chamber music at the widow Mrs. Hammerstedts apartment.

Karla and Egon are spending the vinter in Mallorca while the rest of the house's tenants decide to spend the vinter at a cottage.