Retirees Karin, Gerhard and Philippa are not in the mood for Nordic walking and seniors' courses at the university. When Philippa, who is living life to the full as Leonie's godmother, helps the two to unexpected grandparenthood, they suddenly have two "lively" god-grandchildren to look after, a huge bouncy castle standing in the garden and Lego bricks stuck to their feet.

For Jenny, in her mid 30s, everything is going great: Her career at the Munich Opera House is going uphill and in her friend Tobias she seems to have found the ideal man. But then the events rush: The new stage designer at the opera proves to be her ex-boyfriend Erik and a pregnancy test turns out to be positive. That's not enough, Jenny's free-spirited mother Jutta lodges with her and Tobias indefinitely. The casual hippy lady soon shakes up the orderly life of the couple. At the same time, Erik Jenny turns his head violently.