The former miner Andreas Sobitsch is found shot dead on the river bank, not far from Dortmund. His home was an old colliery settlement. Inspectors Peter Faber, Martina Bönisch, Nora Dalay and Jan Pawlak question friends and ex-colleagues of the murder victim. Sobitsch had campaigned for the interests of the miners to the end. But there is a dispute in the once tight -knit community: an amusement park will soon open on the site of their colliery. But finding new, adequate jobs in the region is difficult. Many feel they are the losers of structural change in the Ruhr area. New clues emerge during the investigation: Are there connections to extremist circles?