Many people already see themselves as the owner of a spacious top floor apartment in one of the romantic districts of Munich, until this dream is shattered by the notorious Munich real estate prices... The Munich chief inspectors Ivo Batic and Franz Leitmayr are in the basement of a largely already luxury renovated apartment building. There lies the body of the former caretaker Grassl. The dead man has serious head injuries. Grassl's Thai wife Malee and their son Ton have disappeared. The new caretaker Mikosz obligingly opens all doors for the officers and would love to play investigator himself.
Gerti from the butcher's shop on the ground floor knows them all: the shared flat around Pierre Traublinger and his familyrevealing playmate Naomi, the mysterious professor, the chic Frau von Helmstedt with the changing male acquaintances and Konrad Strobl, the plumber who mourns the loss of his father and who has his workshop in the backyard. The profit-conscious owner Peter Bachinger also lives here in the house. Most would have had a motive for murder. But to the annoyance of the two chief inspectors, the already difficult investigations also suffer from the unhelpful behavior of their otherwise so patient chief inspector Carlo Menzinger: Instead of relieving Batic and Leitmayr of the tiresome research, Menzinger develops mysterious activities that obviously have nothing to do with the investigations in the Grassl case do have.