As father of seven of the naughtiest children in the world, Mr. Brown has lost control. Seventeen nannies have been driven away and he has lost all hope of ever finding another. But then, one day, a mysterious and magical figure turns up at the door. Her name is Nanny McPhee. With her bizarre looks and special powers, it seems that the Brown children may finally have found their match.

Academy Award winner Emma Thompson and Colin Firth lead the cast as Angela Lansbury makes a welcome return to the big screen. Emma Thompson also provides the screenplay for this magical tale based on the Nurse Matilda novels by Christianna Brand.