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.

Anna and her lodger, Mr. Kurtz, have come to terms with each other in their shared flat. But both Mr. Kurtz's planned conversion of the cosy four walls into a smart home and Anna's feelings for a new acquaintance shake up their life together.