Jürgen Sternow, head of the special cyber crime department of the Kiel State Criminal Police Office, was the victim of an assassination attempt. It is reasonable to assume that the perpetrator is to be found in the rapidly growing area of cybercrime. Inspectors Borowski and Brandt are entrusted with the investigation by the responsible public prosecutor. While Borowski first has to acquire special technical knowledge , Sarah Brandt is in her element as a former hacker. But how do you hunt down an unrelated perpetrator who knows all the tricks of the trade to hide on the dark web? When Brandt manages to discover a gap in the assassin's seemingly perfect digital camouflage, they track down the killer.