Kurt Wallander has made the dream of his life come true. He has bought a house by the sea. He takes long walks with his faithful companion, the Labrador Jussi. Kurt feels more content and in harmony with his life than ever. All of a sudden the calm in idyllic Ystad is broken by a powerful explosion which makes the entire town go black. What has been blown up is the only transformer station in Ystad.
The explosion is followed by several other deeds. Military is called in and a state of emergency is proclaimed. Ystad starts to look like a war zone. But is it sabotage or an act of terrorism? There is chaos and chased by media, Wallander fumbles in the dark, looking for terrorists or perpetrators.