The "First Kitzbühel Cheese Dumpling Eating Competition" culminates in the duel between the European champion Wolfgang Neudecker and the challenger Thorsten Hirzinger. Then Neudecker collapses dead. His attending physician, Dr. Valerie Renner, does not notice anything conspicuous. But the forensic pathologist Dr. Haller finds poison in his body. Hirzinger hated the more successful competitor, Astrid Pirkl, mother-in-law and self-confessed ascetic, the glutton.
