« This FBI agent is going undercover... and he's concealing more than a weapon. »
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.
Using a few tricks of disguise, he completely transforms himself into Big Momma, even taking on the corpulent septuagenarian's everyday routine-from cooking soul food to delivering babies to "testifying" at the local church. In the mean time, Malcolm starts falling for Sherry, who may or may not be hiding some stolen cash. Now, Malcolm/Big Momma must somehow find a way to nab his criminal and the girl.