Braun is transferred to Saarland wine village St. Florian, which is dominated since long by semi-secret society of seven hereditary winery 'queens'. Fishing, he discovers the corpse of drowned old wine grower Konz. The villagers' prime suspect is millionaire Rose Assmann, who left to marry a GDR citizen and presumably stole part of its missing state funds. Geiger and Brauns also dig into her claim to the town's by far most prestigious winery, which belonged to her family until her communist 'treason'.