Rosenheim band "Grooving Four" singer-guitarist Ignatz Wölfle was fatally heart-stabbed in their regular rehearsal venue, tavern "Zum Goldenen Reh". Wölfle had an affair with innkeeper and ban manager Johannes Reh's wife Lydia. Fresh widow Franziska now inherits all, a prenuptial barred her from divorcing him. Precinct secretary Christin Lange dates attractive surfer Julian Trautmann, who dreams of starting a Thai style mobile surfboard rental service at the Chiemsee in Rosenheim, so she begs for surfing accountant Andreas Lorenz' s expert help to elaborate a business plan.
—KGF Vissers