Silvio Meinert's body is found floating in the water. Inspector Marie Brand and her colleague Simmel are investigating the area surrounding the dead man. First of all, it is noticeable that he lived in a polyamorous household and that there were very likely tensions there. At least Simmel is assuming, since he can't imagine it, that such a constellation shouldn't lead to jealousy. The doctor Laura, the businessman Andi and Silvio had been in an open love triangle for several years . In addition, Silvio and Andi also worked in the same catering company, where things were not looking good financially at the moment, which is why Silvio wanted to get out and start over as a TV chef.