The life of Sebastian Fritz is in shambles. His law studies have failed, and he has no idea how to make a living. Frustrated, he is persuaded to visit a job placement agency. An advertisement there sparks an idea: he wants to revive the extinct profession of private detective. His very first case leads him to track down a double murderer and into the social hotspots of Rhein City, the mega-city of the future that has merged from Cologne and Düsseldorf.