FBI agent Malcolm Turner goes back undercover as Big Momma, a slick-talking, slam-dunking Southern granny with attitude to spare! Now this granny must play nanny to three dysfunctional upper-class kids in order to spy on their computer hacker father.
Twelve-year-old Annie Lamm's first day of summer break quickly turns into a disaster. She realizes that her parents have not only decided to fly her to Hilton Head Island during their second honeymoon, but they also plan to coerce her to spend half her summer with her 76-year-old Grandpa Donald whom she hardly even knows.
