For the public prosecutor's office, the accident file "Lieke van Eyck" is quickly closed, but her sister does not believe in any personal fault of the reliable and disciplined executive secretary. The Dortmund lawyer Stephan Knobel is supposed to investigate the circumstances of the death and encounters the journalist Gisbert Wanninger, who senses a major story here: The ThyssenKrupp corporation, for which Lieke worked, is said to belong to a secret cartel for the procurement of rare earths. Was Lieke an obstacle as a knowledgeable insider?.