Popular chemistry teacher Ursula Reber is found with a broken neck in Stuttgart's Buchwald gymnasium (high school) lab class. Artist and guest teacher Pia Sander discovered her but wrecked must traces trying to help her friend, in vain, thus accidentally wriggling back returning into the life of her all but enthusiastic misanthropic autistic son Rico Sander. Student Paul Teichert, who risked funking his year on chemistry, admits having been there but only to copy the exam questions. Married principal Martin Meinhard was seen by Pia having a row while dining with Ursula Reber, whom he paid 25 000 Euro, while his wife Claudia may have found out.
—KGF Vissers