On an abnormally hot summer day in Oslo, a strange electric field surrounds the city as a collective migraine spreads across town. TVs, lightbulbs, and electronics go haywire, the chaos reaching a debilitating crescendo...

When an explosive plant at a gas station kills a police sapper, the chief police officer assigns Gebels from the homicide unit to the case. The investigation leads him to the trail of a criminal from the armed arm of the Pershing group - a bomb maker...