Turmoil in the Heidelberg chocolate dynasty of Torgau: A blackmailer has distributed twelve poisoned chocolate eggs throughout the city. The motivational coach of niece Vivian is stabbed. The conflict between company patriarch Edgar and siblings Vivian and Sven threatens the family peace. Tassilo, Edgar's adoptive son, tries to smooth things over—until the father eats an egg on live camera. This is actually a case for private investigator Max Koller. But he is retired.