Erik Binz casually carries into the precinct the corpse of a fellow teen knave, whom he found in the supply van of the shop he runs with sister Anke, where it was a regular client: Till. She explains simpleton Erik Binz is the school youth's favorite laughing stock. he keeps referring to a voice in his head, which doesn't have his shy, gentle nature. Till's estranged father Gregor Westermann is barely shocked by the murder of his 'troublesome' knave, in whose room pictures are found suggesting gay abuse by his teacher Thorsten Mischnik. Interpreting the 'internal voice' proves key to the case.
—KGF Vissers