Mr. Fox, a former chicken thief, has reformed and now works as a journalist. He lives with his wife, an adolescent son and a nephew in a tree on a hill with a panoramic view. Unfortunately, the constant view of the biggest chicken farms in the area is too strong a temptation and so Mr. Fox, with cunning and charm, decides to embark on a last “big heist”. Returning to the thieving life he had renounced years before, he runs up against the three owners of the farms. Boggis, Bunce and Bean aren’t very happy about his nighttime raids on the chicken houses and decide to team up, setting off a terrible counter-offensive involving all the animals and their underground world. Only Mr. Fox’s shrewdness saves him.