Varg Veum receives a surprising visit at his office from a woman he has never met before. She presents herself as his half-sister. The woman has an assignment for Veum. Her god-daughter, a nineteen-year-old student nurse from Haugesund, moved out of her apartment in Bergen a couple of weeks ago. Since then, no one has heard from her. She has not left any new address. She does not answer her mobile phone. The police have not yet taken the case seriously.
Veum takes on the assignment. His investigations uncover half-repressed misdeeds and stored-up hatred. They lead Veum to confront an unscrupulous MC gang and to put him on the track of a community that carries out its highly dangerous activities in the murky anonymity of the Internet.
And the meeting with the elder sister also ends up showing Veum unknown facets of his own earlier history.