Tessa, 32-years old, dreams of life in the country, with frilly chic and fruitcake. Jana, 63-years old, lives in the country, with wellington boots and manure heaps. They don’t really have anything in common. Apart from the fact that they are half-sisters – and the house by the lake, which they have both inherited. Oh yes, and of course the corpse in precisely this lake … with North German composure and Berlin panache, the two dissimilar sisters try to solve their first murder case.