Karsten Aslaksen, chief engineer of a large chemical company, disappears without trace. His married lover, a successful politician named Vibeke Farang, approaches private investigator Varg Veum to track him down discreetly.
A young man lives in a flat with his mother. One day she falls ill suddenly only to pass away the following day. The young man is left alone in the flat. However a door that can't be shut properly means he must cope with unwanted intrusions.