Borchert and Dominique Kuster take over the defense of the taxi driver Jrg Zollinger. Captain Furrer suspects him of the murder of a passenger, the African investigative journalist Nuka Baluba. All the evidence incriminates the uncontrolled suspect, whose testimony initially seems unreliable. Borchert is suspicious of the fact that public prosecutor Dietrich is quick to commit to Zollinger. The "lawyer without a license" suspects that Baluba's research into child labor in cobalt mines in the Congo has something to do with the murder. During his research he came across the respected charity "Our Heart for Africa" by Henrik Wollschlger, whose patrons also included the upper class of the financial metropolis of Zurich and some wealthy clients of his old friend, the star lawyer Reto Zanger. In addition, shortly before his death, the murdered man had contact with Anneli Keller, the Africa expert at the Federal Foreign Office, and her boss Ulf Hellmann. Meanwhile, Dominique takes on the widow of the murdered journalist, Malia Baluba - without realizing that she is also in great danger.
—ARD Das Erste