Paul Flemming's fifth case: The Franconian George Clooney and amateur detective Paul Flemming is investigating again. This time, he becomes embroiled in a criminal case that dates back far into the past. A long-expired crime appears in a new light. Paul suspects a miscarriage of justice and, worse, a malicious trap for Konrad Kleinschmidt, who was convicted of murder 25 years ago. His inquiries lead Paul to the owner of a powerful steel company. Of course, the history of Nuremberg is also an essential part of Paul Flemming's fifth case. This time, it appears in the form of the first train to run on German tracks: the "Adler." For Paul and his friends - reporter Blohfeld, prosecutor Katinka Blohm, and her daughter Hannah - caution is advised, as the powerful CEO not only has an iron fist but also a heart of steel.