Ekki is getting married. Wilsberg can't believe it. And he's supposed to be the best man. Despite his doubts about whether Kerstin Buckebrede is the right one, he can't say no to Ekki's request.

In the antique shop there is an old lady who doesn't know how she got there or where she lives. Wilsberg has a care problem. With skill he finds out that it is Hanni Haffner.