Varg Veum is no longer working as a private investigator. He's got a permanent job as a teacher, and has calmed down his life, enjoying the domestic bliss with his new girlfriend Karin, but the idyll doesn't last long. Veum gets a brutal meeting with the past, when "The Knife" is released from prison, determined to take revenge on those who got him convicted for the murder of a teenage girl.

警员汉斯有着不光彩的过去，发展一直受阻。在一次突击查案过程中，上司误认为他与犯罪团伙有染，强迫他去休假。岂料安静在家休息的汉斯，无缘无故被卷入到了一起网络诈骗案件中。为了摸清整个事件的来龙去脉，也为了自己的清白，汉斯只得深入犯罪组织中。