When a street-smart FBI agent is sent to Georgia to protect a beautiful single mother and her son from an escaped convict, he is forced to impersonate a crass Southern granny known as Big Momma in order to remain incognito.

Young teenager Sam Witwicky becomes involved in the ancient struggle between two extraterrestrial factions of transforming robots – the heroic Autobots and the evil Decepticons. Sam holds the clue to unimaginable power and the Decepticons will stop at nothing to retrieve it.