Please everyone leave the bus: murder! Actually, Rosi Ritter only wanted to lead a bus trip along the German Wine Route - but then the sausage warmer fails, and during a break in the Palatinate Forest she also stumbles over a corpse. The young winemaker Anna Zeder was brutally beaten to death. Next to her: the amulet of Rosi's best friend Grete, whose winery is the victim's biggest competitor! Rosi, a former chancellor's assistant with organizational talent, Olga, an ex-commissioner with a concrete hairstyle, and Monique, a charming tango dancer with a keen sense of smell, investigate on their own. Between Zumba classes, wine festivals and family feuds, the three come across a web of intrigue, jealousy and secrets that leads deep into the heart of the idyllic Palatinate. Cozy crime with wit, charm and a pinch of danger!