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.

FBI agent Malcolm Turner goes back undercover as Big Momma, a slick-talking, slam-dunking Southern granny with attitude to spare! Now this granny must play nanny to three dysfunctional upper class kids in order to spy on their computer hacked dad.