Mirko Schremp, a cafeteria cook at a vocational school, is found dead in the vandalized kitchen where he works, a knife in his chest. Schremp was not very popular with his co-workers, and trainee Daniel Steeger in particular bore the brunt of his hatefulness. Did Daniel’s suffering finally reach its limits? The victim also had problems with Pascal Weber, a student who complained about the quality of the food. Did Weber want to get his revenge on Schremp by vandalizing the kitchen after closing?