The lifeless body of a 16-year-old girl is found in the trunk of a dealer's wrecked car. Commissioner Judith Mohn recognizes the teenager: it is Jette Mertens, the daughter of a couple of friends. The day before, called to the place of a party, the commissioner had met the young girl and sent her home. Assaulted by guilt, Judith will do everything to find the murderer of Jette.