In the 1940s, overworked mother Isabel Green struggles to manage her farm and raise three mischievous children while her husband is away fighting. Desperate for help, she's surprised when Nanny McPhee, a magical government nanny, arrives at her doorstep. As Isabel's scheming brother-in-law tries to persuade her to sell the farm, she'll need all the help she can get to keep her family together.

Nanny McPhee and the Big Bang
A young mother, left to manage the family farm while her husband is away at war, receives unexpected help from Nanny McPhee, a unique and enchanting caregiver who teaches the unruly children and entitled cousins valuable life lessons.