 In season 2, the squad continues investigating the corruption case.Helmut Enders relies on the contacts of Armin Ponew, a former cop who now is involved in manipulated sports betting in the Fußball-Regionalliga (football regional league); as a result, Enders himself becomes entangled in criminal activities.Additionally, Jan Haroska is forced to leave the KDD because of his relapse into alcoholism and the show chronicles his attempts to sober up and rejoin the police force.