Mrs. Greenlives in a relatively peaceful town, and she is helpless to the current state of chaos. Her three children, Norman, Megseyand Vincent, fighting or fighting all day
In trouble, there is not a moment of silence, and her husband Rory, who is on the battlefield , has not been heard from for several months. Mrs Green feels like she's been tortured insane, with constant pressure from her brother-in-law Philto sell the Rory family's farm; and her boss, Mrs Docherty, has been acting eccentric lately; most of all, her smartly dressed nephew Cyriland niece Celiais planning to leave from London, wants to escape the war on the farm, and is ready to wait for a long time.
It was very unfortunate that Mrs Green's situation was much worse than it seemed, and Phil wasted no time in telling her that he had contacted a buyer who was willing to pay a premium for the farm, but in fact Phil Threatened for having a large gambling debt, claiming that if he can drive the Greens off the farm, all IOUs will be written off—if Phil succeeds, the Greens will be left with nothing.
To Mrs Green's surprise, Cyril and Celia arrive at the farm early in the morning, and she's not at home because she happens to have work to do, resulting in two pampered city kids and their "hillbilly" cousins When they saw each other for the first time, there was a strong hatred for no reason, and the war between them quickly escalated to an uncontrollable violent level. When Mrs. Green returned home, she found that her house was almost Ruined by her children, she's trying in vain to stop a fight between them when she hears a knock on the door. It's the magical nanny McPhee.
Phil secretly released the most valuable piglet in the Green family, intending to make Mrs. Green fall into complete despair and had to sell the farm. McPhee used her magic again, forcing the five children to go out to find them together, So that they can experience the joy of unity. Working together, they finally found and caught all the little piglets in time to save Green's family's biggest crisis. But with the terrible news of Mr. Green's death on the battlefield, everyone was immersed in grief, except Norman, who, because he believed that his father was still alive, decided to go to London with Cyril to find out about him What the hell happened to my father—and, of course, McPhee with him.
