Isabel Green is trying to raise 3 children and run the family farm while her husband is away at war. She even has to resist her brother's pressuring her to sell the farm. Things get even worse when two spoiled cousins come to stay with them. Things do get better when Nanny McPhee arrives. She teaches the children 5 lessons: to get along, to help each other, to have faith, etc.
I enjoyed the transformations that took place, particularly among the children. At first they laugh off Nanny McPhee's rule: When you need her, even if you don't want her, she will be there. When you don't need her, even if you want her, she will go. The children do learn her lessons and are transformed by them. Even Isabel's brother Phil seems to soften his attitude.
Aside fom some crude humor, no content warnings.
Overall, a very good family movie with positive messages for kids.