Fun-loving Anna and her brittle lodger Mr. Kurtz are already living under the same roof as an old married couple. The balance of opposites threatens to tip when Anna's helper syndrome kicks in twice. Her friend Gundi, who has injured her knee, needs help with her everyday life and a barrier-free home, but she can hardly afford a new apartment on her meagre pension. Anna's ex Willi needs a place to stay even more urgently. Soon there is the danger of a senior citizens' flat share.