Bernd and Daniela Weigel not only make a good deal with the sale of a building plot, but also make the acquaintance of the happy buyers. The couple Viktor and Svetlana Galkin want to finally build a house for their whole family on the newly acquired 1000 square meters in a prime location. The Weigels' and Galkins' high-proof drink is soon followed by a rude awakening: a bomb could go off on the building site at any time.

Where there is one corpse, there can also be another! As if Haller knew it, he continued to search near where a shot woman was found. In fact, Haller's "eye" Niko and Inspector Laura find another dead person in the bushes.

Village policeman Gasperlmaier has a tough time in his third case. He's immediately summoned from a funeral to the bathroom of a family home. There, he finds a dead body. Together with his new superior, the investigation begins. But the first death is followed by a second. More and more pieces of the puzzle are piecing together a grim picture from the past. There's little time left for Gasperlmaier and his new boss, and it seems his mother-in-law is also involved.

In his film, Johann Betz focuses on architect Franz Joseph Ruf, who designed more than 300 buildings during his career. These include the Chancellor's Bungalow in Bonn, Maxburg Castle in Munich, and the German pavilion at the 1958 World's Fair in Brussels.