During building work in the city of Baden-Baden in 2015, an evil troll who was transformed into stone in the 15th century is accidentally brought back to life. To prevent being unmasked, the troll slips into the body of Vanessa Majer (Eva Habermann) and enslaves her.

Meanwhile, Vanessa Troll is looking for Charlie (Nadir Sisman), the virginal boyfriend of Vanessa’s daughter. The troll needs his blood to evoke a portal to a magical prison. All he needs now is a great book of spells which he wants to find with the help of the ominous King of the Lake. Vanessa Troll’s plans prove to be successful if it wasn’t for the author, Doctor Fischer (Helmut Krauss), and the curious neighbour, Béatrice (Cecilia Pillado), who eventually come after him…