The faculty of the vocational college III is not exactly engulfed in grief when the young teacher Daniela Heckert is murdered. The psychologist Hannah Schmielink, called in for help from Münster, is horrified by the depths of darkness that unfold in the school. Just as the shadows surrounding the motive for the murder and the suspects begin to lift, the diligent principal suddenly disappears. Hannah Schmielink finds herself getting closer not only to the attractive commissioner Jan Heidmeier from the Münster criminal police but also to the perpetrator. Too close!.