Film adaptation of the "Heimat" crime caper novel by Rita Falk. When several members of the Neuhofer family die within an unusually short spell most inhabitants of Niederkaltenkirchen believe in a succession of unfortunate coincidences. Only village cop Franz Eberhofer smells a crime and has soon identified the alleged criminals: the equally attractive and mysterious Mercedes and her partner Klaus Mendel. Together with his wacky former colleague Rudi Birkenberger he tails the two suspects. The surveillance takes the Bavarian cops to Tenerife where they are forced to take lodgings as a couple in a Romantic Hotel. Yet it is Mercedes who actually turns Franz's head, thereby jeopardizing his criminalistic neutrality.