im going to b explaining this:
first scene: they show their (ugly) home and animals pooping on the farm and yelling and "get off the furniture because i want the house to look nice for our rich cousins"
towards the next scene: all the items in a shop start talking and saying "THE PERSON YOU NEED IS NANNY McPHEE" and also before that part,there is more bratty rich cousins realizing when they step out of the car they will be stepping in animal poop...and the diva-like young daughter is FIGHTING to stay in the car. after her clothes are dropped and ruined, there is a scene shortly after they are in the house where the cousin (boy) gets 'dad's jam' which is a jar of jelly they took years\months to make and opens it when they say put it back and then slides it across the table and breaks it to pieces. they are then violently fighting in another scene where the mom can't individually handle the children herself so nanny mcPhee appears magically and greets the kids upstairs,(she greets the mom first). it may be a bit intense for young children whenever they are fighting when the camera people show a better view of it. nanny mcPhee then says,"stop fighting" and also a kid throws this paper thing in a fire. they don't listen SO SHE WHIPS OUT HER CANE AND BANGS IT!!! -it pauses everything,and a black bird can then get the paper thing out of the fire instead of making the kid do it (which is why she is upset at him). she also would make them fight themselves instead of fight others. she said she wouldnt make it stop unless they said they were sorry like they meant it. they then said they were sorry and she made it stop and she went downstairs and told the mom lesson 1,stop fighting,was complete. then they obeyed her when she said to go to bed. but they were having trouble with that and they were saying "ID RATHER SHARE WITH A GOAT" or "ID RATHER SHARE WITH AN ELEPHANT" so she magically makes a goat and elephant sleep with the kids who said that. they said that since they didnt want to share with someone else (human). one of the kids wouldnt have to share a bed. then in the morning,she blows a loud trumpet to wake them up and says "out of bed get dressed and downstairs for breakfast on the double"(right now). well whenever all the kids are downstairs except one cousin (the girl) they find her in the kids moms dress (not hers)she said it was the only nice thing for her to wear cause her other clothes got covered in poop. they were then telling her how she cant wear that and all. when they got to the farm, the piglets were gone. so they had to chase the piglets (my favorite part of the movie). nanny mcPhee used her magical cane to make the pigs "fly",climb trees,and swim in a fanciful way. yet they still didnt catch the pigs. so the cousin (boy)'s strategy was to use an important part of the dress she was wearing to catch the pigs. they showed the mom the pigs they had caught,but she was upset about what they had used to get the pigs. i cannot remember much more. PLEASE give this a "helped me decide" or "had useful details" :D P.S. i gave itage 9+ cause of the violence (pretty mild though).