Mr. Fox, a charismatic and clever fox, decides to leave his wild ways behind for the sake of his family, promising his wife Felicity that he will find a safer, more respectable way to provide for them. Despite his best efforts to lead a more honest life as a newspaper columnist, Mr. Fox cannot resist the lure of his old, thieving habits. Succumbing to temptation, he devises one final, grand plan to raid the farms of three wealthy, notoriously cruel farmers—Boggis, Bunce, and Bean. This decision puts not only his family's safety at risk but also threatens the well-being of the entire animal community.

As Mr. Fox and his lovable, quirky friends embark on their perilous mission, their actions trigger a fierce retaliation from the farmers. The farmers, outraged by Mr. Fox's audacity, band together in an obsessive quest to capture him, employing increasingly extreme and bizarre methods to protect their produce. The conflict escalates, forcing Mr. Fox, his family, and their animal neighbors to come together in a bid for survival. They must navigate through a series of daring escapades and close calls, learning the value of unity, cleverness, and courage in the face of adversity.