Varg Veum wakes up to a roar that shakes all of Bergen. It turns out to be a weapons depot outside the city that was blown up. Several people lose their lives, including Varg's best friend Even, who is soon named as the bomber. However, Wolf can't get it to work and starts digging into the dark secrets of the arms industry. His investigation takes him to Budapest where he becomes involved in a deadly game in what will be his biggest and most dangerous case ever. Varg soon realizes that he has taken water way over his head when his girlfriend Karin becomes the next victim.

Varg Veum becomes involved in the search for a missing pair of siblings in the neighborhoods of Bergen where prostitutes hang out. He sees the connection with a murder case investigated by a colleague, where the murder victim turns out to have a disturbingly close connection to the missing pair of siblings. In connection with this, life takes a new turn. Varg is going to be a father and in step with Karin's growing belly, the threats against him come one after another. The clues point to a very ruthless drug gang. Varg faces the most important case of his life, let the criminals go free or put his own and Karin's life in danger.