Nine-year-old Marlon is found dead at his school. He was pushed down the stairs and shows signs of a previous struggle. Lena Odenthal and Johanna Stern soon noticed that this death caused ambivalent reactions at school: Marlon's conspicuous behavior made him an outsider who pushed his teachers, his own parents and also those of his classmates to their limits. It is depressing for the inspectors that in MarlonsSurroundings almost more relief than sadness is felt at his death. Lena and Johanna are all the more dependent on Marlon's only friend Pit and his only adult ally, the social worker Anton Leu, for their investigations. Piece by piece, the inspectors reconstruct the last days of a boy who couldn't cope with his own emotions and whom not a few wanted to get rid of.